Muslim bin Abi Bakrah says that once he passed by his father who was making this supplication: "O Allah, I seek refuge in You from poverty, disbelief, and punishment." I memorized this supplication and began to ask for it after every prayer. One day my father passed by me while I was making this supplication. He asked me, "Son, where did you learn these words?" I said, "O my father, I heard you making this supplication after every prayer, so I memorized it." He said, "Son, hold fast to these words, for the Prophet (peace and blessings be upon him) also used to make this supplication after every prayer."