How sound is the saying: "Cure your sick ones with Sadaqat (charity)," and does Sadaqat have an effect in repelling distress, sorrow, and grief?

The hadith "Cure your sick with charity" is weak and holds no weight. It has not been established that charity has a specific effect in repelling distress and grief. However, various invocations (dhikr) have been reported to have a great impact in this regard, among them the supplication of Yunus (peace be upon him): "There is no deity except You; exalted are You. Indeed, I have been of the wrongdoers," and the supplication "Allah, Allah, my Lord, I do not associate anything with Him," and the supplication "O Allah, I am Your servant, son of Your servant, son of Your female servant..." These invocations remove anxiety and sorrow.