'Aishah (May Allah be pleased with her) reported:
I heard the the Messenger of Allah (ﷺ) supplicating in my house: "O Allah! Treat harshly those who rule over my Ummah with harshness, and treat gently those who rule over my Ummah with gentleness."[Muslim]. (PT)
Arabic/English book reference (PT): Book 1, Hadith 655 (PT)