Cure for 99 illnesses

Rasulullaah ﷺ said that the words “Laa Howla wa Laa Quwwata Illa Billaah” is a cure for 99 illnesses, the least of them being depression.
[Haakim 1990, from Hadhrat Abu Hurairah رَضِيَ ٱللَّٰهُ عَنْهُ]