Hadith is all words (sabda), acts and resolutions and consents of
Prophet Muhammad SAW which was made a decree or a law in Islam.
Hadith is used as a source of law in Islam other than Quran, Ijma and Qiyas,
where in this case, the position of hadith is the source of the second law after the Quran.
There are many historians of hadith narration, but often referred to as hadiths
there are seven scholars, Imam Bukhari, Muslim Imam, Imam Abu Daud, Imam Turmudzi, Imam Ahmad,
Imam Nasa'i and Imam Ibnu Majah ..