Sayyiduna Usamah bin Sharik (may Allah be pleased with him) said: I set out with the Prophet (peace and blessings be upon him) for Hajj, and people kept coming to him. Someone said: O Messenger of Allah, I performed the sa'i before the tawaf, or I delayed something. He (peace and blessings be upon him) would say to them: "There is no harm, except for the one who unjustly assails the honour of a Muslim; he is the one who has fallen into harm and is ruined."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 469