Bulugh al-Maram, Book 16, Hadith 1506 (In-Book)

Anas (RAA) narrated that the Messenger of Allah said: “If one restrained his anger, Allah will keep His punishment from him (on the Day of Resurrection).” Related by At-Tabarani in al-Awsat.

وَعَنْ أَنَسٍ ‏- رضى الله عنه ‏- قَالَ: قَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-{ مَنْ كَفَّ غَضَبَهُ, كَفَّ اَللَّهُ عَنْهُ عَذَابَهُ } أَخْرَجَهُ اَلطَّبَرَانِيُّ فِي " اَلْأَوْسَطِ" .‏ (1968)‏.‏ ‏3 ‏- صحيح بشواهده، وحديث أنس عند أبي يعلى، والدولابي أيضا.‏

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also referenced under: Book 16, Hadith 1549 (English)