Narrated 'Aishah:
that the Messenger of Allah (ﷺ) said: "The best of you is the best to his wives, and I am the best of you to my wives, and when your companion dies, leave him alone." (ID)
English reference (ID): Vol. 1, Book 46, Hadith 3895 (ID)
Arabic reference (ID): Book 49, Hadith 4269 (ID)