It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: "Ya'qub bin Ishaq bin Ibrahim is in fact Isra'il."

It is narrated from Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) that he said: "As for the Asbat (Tribes), they are the sons of Ya'qub (peace be upon him): Yusuf, Binyamin, Rubil, Yahudha, Sham'un, Lawi, Dan and Qahath. They were twelve men in all, and Allah Almighty spread out from them twelve tribes (asbat) whose (complete) lineages no one knows except Allah. Allah Almighty has said: 'And We divided them into twelve tribes, as nations' [Surah al-A'raf: 160] ." This hadith is sahih (authentic) on the condition of Imam Muslim, but the two Shaykhs did not record it.