Musnad Ahmad 30:2425

Yahya narrated to us, from Shu'bah, and Muhammad ibn Ja'far, who said: Shu'bah narrated to us, from Muhammad ibn Ziyad, from Abu Hurairah, who said—Ghundar said in his narration: He said: I heard Abu Hurairah, from the Prophet, peace and blessings of Allah be upon him, who said: "Indeed, for every prophet there is a supplication with which he supplicated, and I wish to delay my supplication, if Allah wills, as an intercession for my nation on the Day of Resurrection." Ibn Ja'far said: In his nation.