The Messenger of Allah ﷺ said: If anyone suppresses anger when he is in a position to give vent to it, Allah, the Exalted, will call him on the Day of Resurrection over the heads of all creatures, and ask him to choose any of the bright and large eyed maidens he wishes. Abu Dawud said: The name of the transmitter Abu Marhum is 'Abd al-Rahman b. Maimun (Using translation from Abū Dāʾūd 4777)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ مَنْ كَظَمَ غَيْظًا وَهُوَ قَادِرٌ عَلَى أَنْ يُنْفِذَهُ دَعَاهُ اللهُ عَلَى رُءُوسِ الْخَلَائِقِ يَوْمَ الْقِيَامَةِ حَتَّى يُخَيِّرَهُ مِنْ أَيِّ الْحُورِ شَاءَ