Maliks Muwatta Book 16, Hadith Number 40.

Section : Contentment in the Face of Misfortune.

Yahya related to me from Malik that he had heard from Abu’l-Hubab Said ibn Yasar from Abu Hurayra that the Messenger of Allah, may Allah bless him and grant him peace, said, “The mumin continues to be struck by misfortune in his children and close friends until he meets Allah with no wrong actions.”