On the authority of Abu Hurayrah (may Allah be pleased with him): A man said to the Prophet (SAW), “Counsel me,” so he (SAW) said, “Do not become angry.” The man repeated his request for counsel several times, and each time he (SAW) said, “Do not become angry.” – Al-Bukhari
عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللهُ عَنْهُ أَنَّ رَجُلًا قَالَ لِلنَّبِيِّ صلى الله عليه و سلم أَوْصِنِي. قَالَ: لَا تَغْضَبْ، فَرَدَّدَ مِرَارًا، قَالَ: لَا تَغْضَبْ