ENOfficial
It was narrated from Ibn ‘Abbas that the Prophet (ﷺ) was treated with cupping when he was fasting and in the state of Ihram.
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، أَنْبَأَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ، عَنْ مِقْسَمٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ احْتَجَمَ وَهُوَ صَائِمٌ مُحْرِمٌ .
sunnah.com