It is in the Book of Sulaym, narrated from Aamash, who narrated it from Khaythamah. He said: “When Ibrahim Nakh’eem was nearing death, he told me: “Keep me near your chest.” So I did that. He said: “I bear witness that there is no God except One Allah, and He has no partner. And I bear witness that Muhammad (SAW) is the Messenger of Allah, and Ali ibn Abi Talib (AS) is the successor of Muhammad, and Hasan is the successor of Ali, and Husayn is the successor of Hasan, and Ali ibnul Husayn is the successor of Husayn.”
He said: “Then he became unconscious and fell down, so I said ‘that is it, that is it.’ Then he regained consciousness and he said: “Did any one hear me except you?” I said: “No.” He said: “I am alive on this and on this I am going to die, and on this were ‘Alaqamah and Aswad. Whoever is not on this, he is not anything.”