Sayyiduna Abu Huraira (may Allah be pleased with him) narrated from the Messenger of Allah (peace and blessings be upon him), he (peace be upon him) said: "I am a human being; just as a human becomes angry, I also become angry, and I curse just as a human curses. So, if I have ever spoken harshly to any person/slave or cursed him who was not deserving of it, then (O Allah) make it a mercy for him."