The Messenger of Allah ﷺ said, "There is no draught greater in reward with Allah than a draught of anger that a servant swallows seeking the face of Allah."
حدثنا زيد بن أخزم حدثنا بشر بن عمر حدثنا حماد بن سلمة عن يونس بن عبيد عن الحسن
قال رسول الله ﷺ ما من جرعة أعظم أجرا عند الله من جرعة غيظ كظمها عبد ابتغاء وجه الله
[Its chain is daif] Ahmad narrated it: 2/128, from the hadith of Yunus, through this same route, and Busiri graded it sahih. See hadith no. 71, regarding Hasan's use of "an" without specifying direct transmission, and it contains another defect (Adab al-Mufrad by Bukhari, no. 1318).