Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) went to visit a sick person and said: "Why do you not call a doctor for him?" They said: O Messenger of Allah! Are you also commanding us to do this? The Prophet (peace and blessings of Allah be upon him) said: "Allah the Exalted has not sent down any disease except that He has also sent down its cure."