It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that he (the Prophet, peace and blessings be upon him) forbade the earnings of a prostitute, the fee for a stud animal, the price of a cat, and the price of a dog, except a hunting dog. In another narration from Sayyiduna Abu Hurayrah (may Allah be pleased with him), he (peace and blessings be upon him) said: "Three things are all unlawful earnings," and in this hadith he mentioned the earnings of the cupper, the earnings of a prostitute and the price of a dog, except a trained hunting dog.
Hammad's narration from Qays is questionable (fihi nazar), and al-Walid and al-Muthanna are both da'if (weak).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 11011
Hadith Gradingمحدثین:مذكوره روايت كي سند مين وليد اور مثني ضعيف هين
Hadith Takhrij«مذكوره روايت كي سند مين وليد اور مثني ضعيف هين ۔»