Abu Dawud
Medicine
Book Number: 022 / Hadith Number: 3851
Narated By Anas ibn Malik : The Prophet (pbuh) had himself cupped three times in the veins at the sides of the neck and on the shoulder. Ma'mar said: I got myself cupped, and I lost my memory so much so that I was instructed Surat al-Fatihah by others in my prayer. He had himself cupped at the top of his head.