Shaykh Yasir Qadhi discusses the Usul Ul Hadith in this final part of the series.
Conditions of Hadith:
It must have a continuous Isnad. Isnad decides the authenticity of any Hadith.
Adalah - honesty and integrity
The person must have precise and accurate memory - Dabt.
The hadith should conform to similar hadiths narrated on the same topic whose chains are stronger.
It cannot have any hidden defect.
Tahdhib al-Kamal, Tahdhib al-Tahdhib, Taqrib al-Tahdhib are some of the major books related to hadith and the origins of the same are introduced to us aptly.
What is the opinion on the Daeef hadith? There are three opinion son the same:
Accept them.
You accept them but with certain conditions.
It should not be touched.