It was narrated from Ibn ‘Abbas that the Prophet ﷺ was treated with cupping when he was fasting and in the state of Ihram.

حَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، أَنْبَأَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ يَزِيدَ بْنِ أَبِي زِيَادٍ، عَنْ مِقْسَمٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ ـ ﷺ ـ احْتَجَمَ وَهُوَ صَائِمٌ مُحْرِمٌ .