Sayyiduna Anas (may Allah be pleased with him) narrates: A man came while the Prophet (peace and blessings be upon him) had already performed the prayer. That man stood up and began to pray alone, so the Prophet (peace and blessings be upon him) said: "Who will cooperate with him? Let him perform this prayer with him (again)."

Sayyiduna Asmah bin Malik (may Allah be pleased with him) narrates: The Noble Prophet (peace and blessings be upon him) was sitting in the mosque after having performed the Zuhr prayer, when a man entered and began to pray. So the Noble Prophet (peace and blessings be upon him) said: "Will someone stand up and do a good deed with him by praying along with him?"