“Whoever restrains his anger when he is able to implement it, Allah will call him before all of creation on the Day of Resurrection, and will give him his choice of any houri that he wants.” (Using translation from Ibn Mājah 4186)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنْ كَظَمَ غَيْظًا وَهُوَ قَادِرٌ عَلَى أَنْ يُنْفِذَهُ دَعَاهُ اللهُ تَبَارَكَ وَتَعَالَى عَلَى رُءُوسِ الْخَلَائِقِ حَتَّى يُخَيِّرَهُ مِنْ أَيِّ الْحُورِ شَاءَ