Musnad Ahmad 1734

It was narrated from Fatimah, the daughter of alHusain, from her father al-Husain bin "Ali, that the Prophet (ﷺ) said: "There is no Muslim, male or female, who is afflicted with a calamity, and when he remembers it, even after a long time, he says, ‘Verily we belong to Allah and unto Him is our return’ for that, but Allah will renew (the reward) for him and will give him the same reward as on the day the calamity befell him.”