Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) narrates that a man came (to the mosque) at a time when the Messenger of Allah (peace and blessings be upon him) had already finished the prayer, so the Messenger of Allah (peace and blessings be upon him) said: "Who among you will give charity to him for the sake of reward?" He says that a man from among the people stood up and prayed with that man. This is the narration of Harun bin Ishaq.