It is narrated from Sayyiduna Jabir (may Allah be pleased with them both) that he said: "I saw the Messenger of Allah (peace and blessings be upon him) during his Hajj on the Day of Arafah, delivering a sermon while riding his she-camel al-Qaswa'. I heard him (peace and blessings be upon him) saying: 'O people, I have left among you something which, if you hold fast to it, you will never go astray: the Book of Allah and my 'itrah (family), that is, my Ahl al-Bayt (household).'"
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ja'far bin Muhammad (may Allah have mercy on him) except Zayd bin al-Hasan al-Anmati (may Allah have mercy on him)."