ENOfficial
Ibn 'Abbas (RAA) narrated, ‘The Messenger of Allah (ﷺ) had himself cupped while he was in the state of Ihram Agreed upon.
Source: sunnah.com
Other translations
Arabic
وَعَنِ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا; أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -{ اِحْتَجَمَ وَهُوَ مُحْرِمٌ } مُتَّفَقٌ عَلَيْهِ 1 .
sunnah.com