The Book on Business

Narrated Rafi' b. Khadij:

That the Messenger of Allah (ﷺ) said: "The earnings of the cupper is filth, the earnings of the fornicator (from harlotry) is filth, and the price of a dog is filth." [He said:] There are narrations on this topic from 'Umar, 'Ali, Ibn Mas'ud, Abu Masu'd, Jabir, Abu Hurairah, Ibn 'Abbas, Ibn 'Umar, and 'Abdullah bin Ja'far. [Abu 'Eisa said:] The Hadith is Rafi' is a Hasan Sahih Hadith. This is acted upon according to most of the people of knowledge, they disliked the price of a dog. This the view of Ash-Shafi'i, Ahmad, and Ishaq. Some of the people of knowledge permitted the price of the hunting dog.