Sayyiduna Usamah bin Sharik (may Allah be pleased with him) narrates that I set out on a journey with the Messenger of Allah (peace and blessings be upon him) for Hajj. People would come to him and someone would say, "O Messenger of Allah, I performed Sa'i before Tawaf." (Someone would say,) "I did this act afterwards," or "I did this act before." He would say to all of them: "There is no harm, there is no sin, except for the person who backbites his Muslim brother, and if that person is an oppressor, then he is the one who is sinful and has perished and is ruined."