Musannaf Ibn Abi Shaybah 37214 — The words of Ali bin Abi Talib

It is narrated from a man of Banu Amir that he said: Sayyiduna Ali (may Allah be pleased with him) said: "I fear only two things for you: long hope and following desires. For long hope makes one forget the Hereafter, and following desires becomes a barrier to the truth. Indeed, this world is turning its back and departing, and the Hereafter is coming. Each of them has sons, so be sons of the Hereafter. For today there is action and no reckoning, and tomorrow there will be reckoning and no action."