The word as it is recited in the Quran: Mahmoud Khalil Al-Hussary, Al-Isra 17:82.
Shifa in Islam
Al-Shifaʾ bint ʿAbd Allah, of Quraysh, was one of the first women emigrants and could write, a rare skill in her time. The Prophet ﷺ came in while she was with Hafsa and said to her: “Will you not teach her the ruqya for namla, as you taught her writing?” (Abu Dawud 3887). The Quran calls itself “a healing and a mercy for the believers” (17:82).
Shifaʾ means “healing”: recovery from illness, from the root sh-f-y. The word also expresses relief, when grief, anger or doubt leave the heart; one speaks of the shifaʾ of the breasts. The Quran uses it four times, for the Quran itself, “a healing for what is in the breasts” (10:57), and for honey, “in it there is healing for people” (16:69). The name is given in the Maghreb (Chifa) and in Turkey (Şifa).
Then eat from all the fruits and follow the ways of your Lord laid down [for you]." There emerges from their bellies a drink, varying in colors, in which there is healing for people. Indeed in that is a sign for a people who give thought.
And if We had made it a foreign [i.e., non-Arabic] Qur’ān, they would have said, "Why are its verses not explained in detail [in our language]? Is it a foreign [recitation] and an Arab [messenger]?" Say, "It is, for those who believe, a guidance and cure." And those who do not believe - in their ears is deafness, and it is upon them blindness. Those are being called from a distant place.