Sayyiduna Ali bin Abi Talib (may Allah be pleased with him) narrates that the Prophet (peace and blessings be upon him) said: "I will pass away, and I am leaving among you two things, namely the Book of Allah and my Ahl al-Bayt, and after these two you will not go astray. The Hour will not be established until the Companions of the Messenger of Allah are sought as a lost thing is sought, and they are not found."
Al-Bazzar recorded it. Its chain contains a narrator, al-Harith, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14959