The hadith is what is narrated from the Prophet Muhammad, either in the form of words, deeds, his provisions (Arabic: taqrîr), physical nature or moral character, travel after being appointed as a Prophet and sometimes before, so that the meaning of the hadith here means the sunnah.
Hadiths are all sayings (sayings), deeds and provisions and approval of the Prophet Muhammad were made as provisions or laws in the Islamic religion. Hadith is used as a source of law in the Islamic religion besides the Qur'an, Ijma and Qiyas, where in this case, the position of the hadith is the second source of law after the Qur'an.
There are many scholars of hadith narratives, but who are often used as references to the hadiths are seven scholars, namely Imam Bukhari, Muslim Imam, Imam Abu Daud, Imam Turmudzi, Imam Ahmad, Imam Nasa'i, and Imam Ibn Majah.