أَخْبَرَنَا مُحَمَّدُ بْنُ مَنْصُورٍ، عَنْ سُفْيَانَ، قَالَ أَنْبَأَنَا عَمْرُو بْنُ دِينَارٍ، قَالَ سَمِعْتُ عَطَاءً، قَالَ سَمِعْتُ ابْنَ عَبَّاسٍ، يَقُولُ احْتَجَمَ النَّبِيُّ صلى الله عليه وسلم وَهُوَ مُحْرِمٌ ‏.‏ ثُمَّ قَالَ بَعْدُ أَخْبَرَنِي طَاوُسٌ عَنِ ابْنِ عَبَّاسٍ يَقُولُ احْتَجَمَ النَّبِيُّ صلى الله عليه وسلم وَهُوَ مُحْرِمٌ ‏.‏

It was narrated that Ibn Abbas said: "Prophet was treated by means of cupping when he was in Ihram." (Diaf)Chpater 93. Cupping To Treat The Muhrim For A Disease he Is Suffering From Translation Not Available

Book Ref: Sunan An Nisai Book 24 Hadith 2847
Web Ref:  Sunan An Nisai Vol 3 Book 24 Hadith 2850