Hadith No: 1
Al-Hakim al-Nishapuri - Ma'rifat 'Ulum al-Hadith
Mentioning the seventeenth type of the sciences of hadith: This type of this knowledge is the understanding of the children of the Companions (Sahaba).
For whoever is ignorant of this type will find many narrations confusing, and it is one of the first things that a hadith scholar (muhaddith) must understand. Amongst this are the children of the Leader of Mankind, Muhammad al-Mustafa (peace be upon him and his holy progeny), and who from them has an authentic narration.
Volume: (1) - Page Number: (50)
[The text is lengthy, so only the relevant excerpt is provided here]
- .... Al-Hakim said: And numerous reports have been transmitted in the commentaries
from Abdullah ibn Abbas and others that on the day of Mubahala, the Messenger of Allah (peace be upon him and his holy progeny) took Ali and his sons, Hasan and Husayn, by the hand and placed Fatimah behind them, and then said: "These are our sons, our selves, and our women. So bring your selves, your sons, and your women, and let us supplicate together, and we will invoke the Curse of Allah upon the liars."