Hadith 5121
وَعَنْ أَنَسٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «مَنْ خَزَنَ لِسَانَهُ سَتَرَ اللَّهُ عَوْرَتَهُ وَمَنْ كَفَّ غَضَبَهُ كَفَّ اللَّهُ عَنْهُ عَذَابَهُ يَوْمَ الْقِيَامَةِ وَمَنِ اعْتَذَرَ إِلَى الله قَبِلَ الله عذره»
It is narrated from Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever guards his tongue, Allah will conceal his faults; whoever restrains his anger, on the Day of Resurrection Allah will withhold His punishment from him; and whoever apologizes before Allah, Allah will accept his apology." Its chain of narration is weak. It was narrated by Al-Bayhaqi in Shu'ab al-Iman.