Criteria of Sahih Hadith

1. The Hadith should not contradict the Qur'an
2. The different versions of the hadith should be in agreement.
3. The Sunnah practice recorded in the hadith should agree with what is known about that particular Sunnah practice.
4. The Hadith should concur with known historical facts and events.
5. The Hadith should have no grammatical and stylistic weaknesses.
6. The Hadith should not contradict established Shariah principles or the universal truths of Islam.
7. The Hadith should not contain material that is impossible to imagine as having originated with the prophet, upon him be peace.