Sahih al-Bukhari 2279

Arabic

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، عَنْ خَالِدٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ احْتَجَمَ النَّبِيُّ صلى الله عليه وسلم وَأَعْطَى الْحَجَّامَ أَجْرَهُ، وَلَوْ عَلِمَ كَرَاهِيَةً لَمْ يُعْطِهِ‏.‏

English translation

Narrated Ibn `Abbas:When the Prophet (ﷺ) was cupped, he paid the man who cupped him his wages. If it had been undesirable he would not have paid him

Reference: Sahih al-Bukhari 2279, Book of Hiring. English translation by Dr. Muhammad Muhsin Khan.