حدیث، در اصطلاح مسلمانان به سخنان پیامبران گفته میشود. شیعیان به سخنان اهل بیت نیز حدیث میگویند. در اصطلاح دانشمندان علم حدیث، به کلامی که حاکی از کردار یا تقریر معصوم (محمد، پیامبراسلام) است، «حدیث» و گاه «خبر» یا «روایت» گفته میشود. شیعیان متعقدند: «حدیث، بهدلیل انتساب آن به معصوم و وحیانی بودن محتوای آن، حجت بوده و میتواند مبنای عمل قرار گیرد»
بنابر عقیده مسلمانان، قرآن، به مثابه قانون اساسی اسلام، بیشتر کلیات را بیان کرده و تبیین تفاصیل و جزئیات را به روایات واگذار کرده است، از اینرو روایات، پس از قرآن، مهمترین منبع شناخت دین اسلام به شمار میآید. بدین جهت، مسلمانان به فراگیری، ثبت و تدوین احادیث، بهرغم برخی فراز و نشیبها، توجه کرده و مجموعههای حدیثی را شامل هزاران روایت در تمام موضوعات مورد نیاز دینداران، فراهم آوردند. پس از آن، دانشهای رجال، تاریخ حدیث، مصطلحات حدیث، فقه الحدیث و... برای حفظ، نشر، فهم و تبیین میراث روایی پدید آمد.
تدوین هزاران اثر حدیثی نشان میدهد که مسلمانان، از آغاز تاکنون، پس از قرآن، بیشتر به حدیث توجه کردهاند. در دوران معاصر نیز اندیشمندان مسلمان با نگاهی دوباره به میراث روایی، کوشش گستردهای را برای بهره جستن هر چه بیشتر از این منبع آغاز کردند و با تأسیس دانشگاهها، مراکز تحقیقاتی حدیثی و... در این راه گامهایی برداشتند.
دانشمندان علم اصول فقه، به نقل کردن سنّت، حدیث (خبر) میگویند.
حدیث قول، فعل و تقریر پیامبر را گویند.
حدیث، در لغت به معنی هر چیز نو و جدید است، خبر و کلام را نیز حدیث خوانند. ابوالبقاء گوید: «حدیث، اسم مصدر از تحدیث به معنی خبر دادن است، سپس قول یا فعل یا تقریری که به محمد منسوب شود را بدان نامیدهاند، و جمع آن احادیث بر خلاف قیاس است». در اصطلاح، حدیث عبارت است از سخنی که حاکی از قول یا فعل یا تقریر معصوم باشد. چنان که جمعی از علمای درایة و اصول تصریح کردهاند.
در طول سدههای بعد از زندگانی محمد و اهل بیت، احادیث توسط شیعه و سنی در مجموعههایی گردآوری و مدون شده است. در میان مجموعه کتابهای حدیث، صحاح سته درنزد اهل سنت و اصول اربعه نزد شیعه از اهمیت بسزایی برای مسلمانان برخوردار است.
اصطلاح علم حدیث از نظر فقهای اسلامی، علمی است که توسط آن اقوال و افعال و احوال یا تقریر محمد و امامان (از نظر شیعیان) شناخته میشود و چون احادیث رسیده از ایشان، شامل گفتههای آنان هم میشود شامل گفته و نیز نام وسائطی است که کلام مزبور را از وی روایت کردهاند. میتوان گفت که اصطلاح «علم حدیث» یعنی دانستن (علم به) قوانینی که به وسیلهٔ آن احوال سند و متن حدیث شناخته میشود.
تقسیمات علم حدیث[ویرایش]
روایت الحدیث (اصول الحدیث) علمی است که از کیفیت اتصال احادیث به پیامبر اسلام و امام، از جهت احوال روات (که آیا ضابط و عادلند؟) و از لحاظ کیفیت سند (که آیا متصل است یا منقطع؟) و غیر اینها گفتگو میکند و خود شامل دو بخش است:
درایة الحدیث (در مقابل روایة الحدیث) علمی است که از مفاد الفاظ متن حدیث چون شرح لغات حدیث و بیان حال حدیث از لحاظ اطلاق و تقیید و عموم و خصوص و داشتن معارض و مانند اینها بحث میکند که مناسب است نام این قسمت را فقه الحدیث گذارند. بخش اول را اصول الحدیث نیز مینامند.
حدیثى متواتر است كه شمار راویان آن در هر طبقه به حدى باشد كه تبانى آنان بر جعل حدیث عادتا محال باشد و افاده علم به صدور مضمون حدیث از معصوم كند. خبر متواتر به لفظى و معنوى تقسیم شده است. متواتر لفظى، خبرى است كه همه ناقلان، مضمون آن را بیك لفظ نقل كرده باشند و این به ندرت محقق شده است. متواتر معنوى، قدر مشترك مضمون چند خبر است و این معنا فراوان تحقق یافته است.هر حدیثی که خبر متواتر نباشد خبر واحد است، هر چند سلسله راویان آن بیش از یکی باشد.
از نظر قدماى شیعه به حدیثى صحیح گفته مىشود كه صدور آن از معصوم قطعى باشد ولو با قراین خارجى، ولى از نظر متأخران حدیثى صحیح است كه اولاً : تمامى سلسله سند آن تا معصوم متصل باشد؛ ثانیا : راویان آن در تمام طبقات داراى دو ویژگى وثاقت و امامى بودن باشند.
«حَسَن» ، حدیثى است كه سلسله سند آن متصل و راویانش امامى و ممدوحاند به مدحى كه به حدّ وثاقت نرسیده است. اگر بعضى از راویان سلسله سند چنین باشند در صورتى كه مابقى صفت رجال حدیث صحیح را دارا باشند به آن نیز حسن گفته مىشود، زیرا نتیجه تابع اخسّ رجال است. از این جهت، حدیث حسن از نظر اعتبار پس از روایت صحیح قرار دارد.
«موثَّق» ، حدیثى است كه، به استثناى شرط امامى بودن ، راویان آن برخوردار از دو ركن پیش گفته در حدیث صحیح باشند. بنابراین اگر سلسله سند روایتى به معصوم متصل و راویان آن ثقه باشند در صورتى كه همه یا بعضى از آنها شیعه دوازده امامى نباشند، موثق خواهد بود. حدیث موثق از جهت اعتبار، پس از حدیث صحیح و حسن، درمرتبه سوم قرار دارد.
به حدیثى «ضعیف» مىگویند كه هیچ یك از تعریفهاى اقسام پیش گفته، یعنى صحیح، حسن و موثق بر آن منطبق نباشد . به عبارت روشنتر، حدیثى كه سلسله سند آن فاقد اتصال باشد ، یا راویان آن افراد مجهولالحال، یا فاسق و دروغگو باشند ، حدیث ضعیف خواهد بود.
برخی ازاحادیث معروف[ویرایش]
نوشتار اصلی: قرآنیان
مکتب و شاخهای از مسلمانان است که قرآن را تنها کتاب و مرجع مستند برای ایمان، انجام مناسک و اعمال دینی خود، قبول دارند. اینان حدیث و گاه سنت را که عموم مسلمانان و روحانیان رسمی بعنوان مرجع مورد قبول برای انجام مناسک و ملاک ایمان و اعتقاد میدانند، ملازم و مترادف اعتقاد دینی ندانسته و در رفتار دینی خود الزامی به رعایت آن ندارند. 
Hadith (// or //; Arabic: حديث ḥadīṯ, plural: أحاديث, ʼaḥādīṯ) are collections of the reports claiming to quote what the prophet Muhammad said verbatim on any matter. The term comes from the Arabic meaning "report", "account" or "narrative". Hadith are second only to the Quran in developing Islamic jurisprudence, and regarded as important tools for understanding the Quran and commentaries (tafsir) on it. Many important elements of traditional Islam such as the five salat prayers, are mentioned in hadith but not the Quran. Different hadith are regarded with different levels of importance by different Muslims, although all variants emphasize the Sunnah.
The hadith literature is based on spoken reports that were in circulation in society after the death of Muhammad. Unlike the Quran itself, which was compiled under the official direction of the early Islamic State in Medina, the hadith reports were not compiled by a central authority. Hadith were evaluated and gathered into large collections during the 8th and 9th centuries, generations after the death of Muhammad, after the end of the era of the "rightful" Rashidun Caliphate, over 1000 km from where Muhammad lived.
Each hadith is based on two parts, a chain of narrators reporting the hadith (isnad), and the text itself (matn). Individual hadith are classified by Muslim clerics and jurists as sahih ("authentic"), hasan ("good") or da'if ("weak"). However, there is no overall agreement: different groups and different individual scholars may classify a hadith differently.
In Arabic, the word ḥadīth (Arabic: حديث ḥadīth IPA: [ħaˈdiːθ]) means a "report, account, narrative". The Arabic plural is ʾaḥādīth (أحاديث) (IPA: [ʔaħaːˈdiːθ]). Hadith also refers to the speech of a person. It is a noun.
In Islamic terminology according to Juan Campo, the term hadith refers to reports of statements or actions of Muhammad, or of his tacit approval or criticism of something said or done in his presence, though some sources (Khaled Abou El Fadl) limit hadith to verbal reports and include the deeds of Muhammad and reports about his companions only in the Sunnah.
Classical hadith specialist Ibn Hajar al-Asqalani says that the intended meaning of hadith in religious tradition is something attributed to Muhammad but that is not found in the Quran. Other associated words possess similar meanings including: khabar (news, information) often refers to reports about Muhammad, but sometimes refers to traditions about his companions and their successors from the following generation; conversely, athar (trace, vestige) usually refers to traditions about the companions and successors, though sometimes connotes traditions about Muhammad. The word sunnah (custom) is also used in reference to a normative custom of Muhammad or the early Muslim community.
See also: Categories of Ahadith
The two major aspects of a hadith are the text of the report (the matn), which contains the actual narrative, and the chain of narrators (the isnad), which documents the route by which the report has been transmitted. The sanad, literally 'support', is so named due to the reliance of the hadith specialists upon it in determining the authenticity or weakness of a hadith. The isnad consists of a chronological list of the narrators, each mentioning the one from whom they heard the hadith, until mentioning the originator of the matn along with the matn itself.
The first people to hear hadith were the companions who preserved it and then conveyed it to those after them. Then the generation following them received it, thus conveying it to those after them and so on. So a companion would say, "I heard the Prophet say such and such." The Follower would then say, "I heard a companion say, 'I heard the Prophet.'" The one after him would then say, "I heard someone say, 'I heard a Companion say, 'I heard the Prophet..." and so on.
Different branches of Islam refer to different collections of hadith, though the same incident may be found in hadith in different collections:
The hadith also had a profound and controversial influence on moulding the commentaries (tafsir) on the Quran. The earliest commentary of the Quran by Muhammad ibn Jarir al-Tabari is mostly sourced from the hadith. The hadith was used in forming the basis of 'Shariah' law. Much of early Islamic history available today is also based on the hadith and is challenged for lack of basis in primary source material and contradictions based on secondary material available.
History, tradition and usage
Traditions of the life of Muhammad and the early history of Islam were passed down mostly orally for more than a hundred years after Muhammad's death in AD 632. Muslim historians say that Caliph Uthman ibn Affan (the third khalifa (caliph) of the Rashidun Empire, or third successor of Muhammad, who had formerly been Muhammad's secretary), is generally believed to urge Muslims to record the hadith just as Muhammad suggested to some of his followers to write down his words and actions.
Uthman's labours were cut short by his assassination, at the hands of aggrieved soldiers, in 656. No sources survive directly from this period so we are dependent on what later writers tell us about this period.
According to British historian of Arab world Alfred Guillaume, it is "certain" that "several small collections" of hadith were "assembled in Umayyad times."
In 851 the rationalist Mu`tazila school of thought fell from favor in the Abbasid Caliphate. The Mu`tazila, for whom the "judge of truth ... was human reason," had clashed with traditionists who looked to the literal meaning of the Quran and hadith for truth. While the Quran had been officially compiled and approved, hadiths had not. One result was the number of hadiths began "multiplying in suspiciously direct correlation to their utility" to the quoter of the hadith (Traditionists quoted hadith warning against listening to human opinion instead of Sharia; Hanafites quoted a hadith stating that "In my community there will rise a man called Abu Hanifa [the Hanafite founder] who will be its guiding light". In fact one agreed upon hadith warned that, "There will be forgers, liars who will bring you hadiths which neither you nor your forefathers have heard, Beware of them." In addition the number of hadith grew enormously. While Malik ibn Anas had attributed just 1720 statements or deeds to the Prophet Muhammad, it was no longer unusual to find people who had collected a hundred times that number of hadith.
Faced with a huge corpus of miscellaneous traditions supported differing views on a variety of controversial matters—some of them flatly contradicting each other—Islamic scholars of the Abbasid sought to authenticate hadith. Scholars had to decide which hadith were to be trusted as authentic and which had been invented for political or theological purposes. To do this, they used a number of techniques which Muslims now call the science of hadith.
Shia and Sunni textual traditions
Sunni and Shia hadith collections differ because scholars from the two traditions differ as to the reliability of the narrators and transmitters. Narrators who took the side of Abu Bakr and Umar rather than Ali, in the disputes over leadership that followed the death of Muhammad, are seen as unreliable by the Shia; narrations sourced to Ali and the family of Muhammad, and to their supporters, are preferred. Sunni scholars put trust in narrators, such as Aisha, whom Shia reject. Differences in hadith collections have contributed to differences in worship practices and shari'a law and have hardened the dividing line between the two traditions.
Extent and nature in the Sunni tradition
In the Sunni tradition, the number of such texts is ten thousand plus or minus a few thousand. But if, say, ten companions record a text reporting a single incident in the life of the prophet, hadith scholars can count this as ten hadiths. So Musnad Ahmad, for example, has over 30,000 hadiths—but this count includes texts that are repeated in order to record slight variations within the text or within the chains of narrations. Identifying the narrators of the various texts, comparing their narrations of the same texts to identify both the soundest reporting of a text and the reporters who are most sound in their reporting occupied experts of hadith throughout the 2nd century. In the 3rd century of Islam (from 225/840 to about 275/889), hadith experts composed brief works recording a selection of about two- to five-thousand such texts which they felt to have been most soundly documented or most widely referred to in the Muslim scholarly community. The 4th and 5th century saw these six works being commented on quite widely. This auxiliary literature has contributed to making their study the place of departure for any serious study of hadith. In addition, Bukhari and Muslim in particular, claimed that they were collecting only the soundest of sound hadiths. These later scholars tested their claims and agreed to them, so that today, they are considered the most reliable collections of hadith. Toward the end of the 5th century, Ibn al-Qaisarani formally standardized the Sunni canon into six pivotal works, a delineation which remains to this day.
Over the centuries, several different categories of collections came into existence. Some are more general, like the muṣannaf, the muʿjam, and the jāmiʿ, and some more specific, either characterized by the topics treated, like the sunan (restricted to legal-liturgical traditions), or by its composition, like the arbaʿīniyyāt (collections of forty hadiths).
Extent and nature in the Shia tradition
Shi'a Muslims do not use the six major hadith collections followed by the Sunni, as they do not trust many of the Sunni narrators and transmitters. They have their own extensive hadith literature. The best-known hadith collections are The Four Books, which were compiled by three authors who are known as the 'Three Muhammads'. The Four Books are: Kitab al-Kafi by Muhammad ibn Ya'qub al-Kulayni al-Razi (329 AH), Man la yahduruhu al-Faqih by Muhammad ibn Babuya and Al-Tahdhib and Al-Istibsar both by Shaykh Muhammad Tusi. Shi'a clerics also make use of extensive collections and commentaries by later authors.
Unlike Sunnis, Shia do not consider any of their hadith collections to be sahih (authentic) in their entirety. Therefore, every individual hadith in a specific collection must be investigated separately to determine its authenticity.
The mainstream sects consider hadith to be essential supplements to, and clarifications of, the Quran, Islam's holy book, as well as for clarifying issues pertaining to Islamic jurisprudence. Ibn al-Salah, a hadith specialist, described the relationship between hadith and other aspect of the religion by saying: "It is the science most pervasive in respect to the other sciences in their various branches, in particular to jurisprudence being the most important of them." "The intended meaning of 'other sciences' here are those pertaining to religion," explains Ibn Hajar al-Asqalani, "Quranic exegesis, hadith, and jurisprudence. The science of hadith became the most pervasive due to the need displayed by each of these three sciences. The need hadith has of its science is apparent. As for Quranic exegesis, then the preferred manner of explaining the speech of God is by means of what has been accepted as a statement of Muhammad. The one looking to this is in need of distinguishing the acceptable from the unacceptable. Regarding jurisprudence, then the jurist is in need of citing as an evidence the acceptable to the exception of the later, something only possible utilizing the science of hadith."
Main article: Hadith studies
Hadith studies use a number of methods of evaluation developed by early Muslim scholars in determining the veracity of reports attributed to Muhammad. This is achieved by analyzing the text of the report, the scale of the report's transmission, the routes through which the report was transmitted, and the individual narrators involved in its transmission. On the basis of these criteria, various classifications were devised for hadith. The earliest comprehensive work in hadith studies was Abu Muhammad al-Ramahurmuzi's al-Muhaddith al-Fasil, while another significant work was al-Hakim al-Naysaburi's Ma‘rifat ‘ulum al-hadith. Ibn al-Salah's ʻUlum al-hadith is considered the standard classical reference on hadith studies.
Terminology: admissible and inadmissible hadiths
Main article: Hadith terminology
By means of hadith terminology, hadith are categorized as ṣaḥīḥ (sound, authentic), ḍaʿīf (weak), or mawḍūʿ (fabricated). Other classifications used also include: ḥasan (good), which refers to an otherwise ṣaḥīḥ report suffering from minor deficiency, or a weak report strengthened due to numerous other corroborating reports; and munkar (denounced) which is a report that is rejected due to the presence of an unreliable transmitter contradicting another more reliable narrator. Both sahīh and hasan reports are considered acceptable for usage in Islamic legal discourse. Classifications of hadith may also be based upon the scale of transmission. Reports that pass through many reliable transmitters at each point in the isnad up until their collection and transcription are known as mutawātir. These reports are considered the most authoritative as they pass through so many different routes that collusion between all of the transmitters becomes an impossibility. Reports not meeting this standard are known as aahad, and are of several different types.
Some hadith are also called hadith qudsi (sacred hadith), like Ziyarat Ashura. It is a sub-category of hadith which some Muslims regard as the words of God (Arabic: Allah). According to as-Sayyid ash-Sharif al-Jurjani, the hadith qudsi differ from the Quran in that the former are "expressed in Muhammad's words", whereas the latter are the "direct words of God". However, note that a hadith qudsi is not necessarily sahih, it can also da‘if or even mawdu‘.
An example of a hadith qudsi is the hadith of Abu Hurairah who said that Muhammad said:
Main article: Biographical evaluation
Another area of focus in the study of hadith is biographical analysis (‘ilm al-rijāl, lit. "science of people"), in which details about the transmitter are scrutinized. This includes analyzing their date and place of birth; familial connections; teachers and students; religiosity; moral behaviour; literary output; their travels; as well as their date of death. Based upon these criteria, the reliability (thiqāt) of the transmitter is assessed. Also determined is whether the individual was actually able to transmit the report, which is deduced from their contemporaneity and geographical proximity with the other transmitters in the chain. Examples of biographical dictionaries include: Abd al-Ghani al-Maqdisi's Al-Kamal fi Asma' al-Rijal, Ibn Hajar al-Asqalani's Tahdhīb al-Tahdhīb and al-Dhahabi's Tadhkirat al-huffaz.
Main article: Criticism of Hadith
The major points of criticism of the Hadith literature is based in questions regarding its authenticity, as well as theological/philosophical critiques. Muslim scholars questioned the Hadith literature throughout its history, with Western academics also becoming active in the field later on.