Musannaf Ibn Abi Shayba 38:71

Ya'la ibn 'Ubayd narrated to us, from Isma'il ibn Abi Khalid, from 'Abd al-Salam, a man from Banu Hayya, who said: 'Ali was alone with al-Zubayr on the day of the Camel. He said: "I adjure you by Allah, how did you hear the Messenger of Allah (may Allah bless him and grant him peace) say—while you were twisting my hand in the Saqifah of the Banu so-and-so—'You shall fight him while you are an oppressor to him, then he shall be victorious over you'?" He said: "I have indeed heard it. Consequently, I shall not fight you."