كتاب البيوع
7  
Business Transactions
Bulugh al-Maram 909
Narrated Ibn 'Abbas (RA):
Allah's Messenger (ﷺ) had himself cupped and gave the one who cupped him his pay; and if it were prohibited he would not have given him (his pay). [Reported by al-Bukhari].
وَعَنْ اِبْنِ عَبَّاسٍ ‏-رَضِيَ اَللَّهُ عَنْهُمَا‏-; أَنَّهُ قَالَ: { اِحْتَجَمَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-وَأَعْطَى اَلَّذِي حَجَمَهُ أَجْرَهُ } وَلَوْ كَانَ حَرَاماً لَمْ يُعْطِهِ.‏ رَوَاهُ اَلْبُخَارِيُّ 1‏ .‏
Reference : Bulugh al-Maram 909
In-book reference : Book 7, Hadith 909
English translation : Book 7, Hadith 915
Hadith Text
Reference