Earning, and Seeking what is Lawful - Section 1 Mishkat al-Masabih 2763
Arabic hadith text
وَعَنْ رَافِعِ بْنِ خَدِيجٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «ثَمَنُ الْكَلْبِ خَبِيثٌ وَمَهْرُ الْبَغِيِّ خَبِيثٌ وَكَسْبُ الْحَجَّامِ خَبِيثٌ» . رَوَاهُ مُسلم
Translation
Rafi' b. Khadij reported God’s Messenger as saying, "The price paid for a dog is impure, the hire paid to a prostitute is impure, and the earnings of a cupper are impure.” Muslim transmitted it.