Sunan Abi Dawud, Hadith 2375 ⓘ
Narrated Anas: We would not allow a man who was fasting to get himself cupped due to abomination of hardship.
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، حَدَّثَنَا سُلَيْمَانُ، - يَعْنِي ابْنَ الْمُغِيرَةِ - عَنْ ثَابِتٍ، قَالَ قَالَ أَنَسٌ مَا كُنَّا نَدَعُ الْحِجَامَةَ لِلصَّائِمِ إِلاَّ كَرَاهِيَةَ الْجَهْدِ .
also referenced under: Hadith 2369 (Hasan)