There are two sayings we have found related with Ayaat e Shifa the first one is as mentioned below.
Once teacher Abu Al Qasim’s Qasheeri son got ill. There was no hope of his survival. Abu al Qasim was really tensed. Then he saw Allah subhan wa taala in his dream Allah taala said: “All those verses which mention about heal – shifa collect them and then read them and blow (expel air from mouth) over the patient. Then write them on a plate and wash it (The writing on plate can be done with water of saffron or hilal food colors and do not let the water get out when you wash the writing and then give that water to the patient). It was done and the Son of Abu Al Qasim got well.
The second references just have the difference that Abu Al Qasim Qasheer saw Prophet Muhammad in his dream and Rasool Allah said “Why do you stay away from verses for healing. Why don’t you ask for healing from them. Then i got up and realized, looked forward and found Ayaat e Shifa at 6 places in Quran.
The following six verses are the Verses of Shifa – Heal.
جزاک اللہ خیرا