(15) باب النَّهْىِ عَنْ ثَمَنِ الْكَلْبِ،
It was narrated that Waqi bin Khadij said:
"The Messenger of Allah said: 'The worst of earnings arte the gift of a female fornicator, the price of a dog and the earnings of a cupper.""
Reference: Sunan an-Nasa'i 4294
In-book reference: Book 42, Hadith 32
English translation: Vol. 5, Book 42, Hadith 4299