حَدَّثَنَا مُسْلِمُ بْنُ إِبْرَاهِيمَ، حَدَّثَنَا جَرِيرٌ، - يَعْنِي ابْنَ حَازِمٍ - حَدَّثَنَا قَتَادَةُ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم احْتَجَمَ ثَلاَثًا فِي الأَخْدَعَيْنِ وَالْكَاهِلِ ‏.‏ قَالَ مَعْمَرٌ احْتَجَمْتُ فَذَهَبَ عَقْلِي حَتَّى كُنْتُ أُلَقَّنُ فَاتِحَةَ الْكِتَابِ فِي صَلاَتِي ‏.‏ وَكَانَ احْتَجَمَ عَلَى هَامَتِهِ ‏.‏

Narrated 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. Translation Not Available

Book Ref: Sunan Abi Dawud Book 29 Hadith 3860
Web Ref:  Sunan Abi Dawud Book 28 Hadith 3851