From Tibb al-A`immah: Narrated from ~Amr Dhi Qurrah and Tha~labah al-Jamm¡l who said: We heard Am¢r al-Mu`min¢n D saying: A severe fever came upon the Noble Prophet XE “Holy Prophet” 9 so Jibra`¢l came to him and recited the following invocation:
In the name of All¡h XE “All¡h” – I invoke (for) you. In the name of All¡h – I cure you of every ailment that afflicts you and All¡h is your Healer. In the name of All¡h – take it as it brings you well-being. In the name of All¡h the Compassionate the Merciful. I swear by the setting of the stars. And that is indeed a mighty adjuration if you but knew. You will surely recover by the will of All¡h the Almighty.
Then the Prophet 9 stood up (cured) from that which had tied him down and he said: “O Jibra`¢l! This is indeed a great invocation!” He replied: “It is from a treasure in the seven heavens.”