Sahih Muslim — Hadith #2204

Harun bin Marouf, Abu Al-Tahir, and Ahmad bin Issa told us, they said Ibn Wahb told us, Amr told me - and he is Ibn Al-Harith - On the authority of Abd Rabbuh bin Saeed, on the authority of Abu al-Zubayr, on the authority of Jabir, on the authority of the Messenger of God, may God bless him and grant him peace, that he said, “For every disease there is a cure. The disease will be cured, God willing.”