بُلُوغُ الْمَرَامِ
Bulugh al-Maram 910
Business Transactions
وَعَنْ رَافِعِ بْنِ خَدِيجٍ - رضى الله عنه - قَالَ: قَالَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ كَسْبُ اَلْحَجَّامِ خَبِيثٌ } رَوَاهُ مُسْلِمٌ [1] .
Narrated Rafi' bin Khadij (RA): Allah's Messenger (ﷺ) said: "The earnings of a cupper (Hajjam) are impure." [Reported by Muslim].
Sunnah.com reference: Book 7, Hadith 162