al-Hakam bin 'Utayba الحكم بن عتيبة · The Book on Business

"A man from (the tribe of) Kilab asked the Messenger of Allah (ﷺ) about studding a stallion and he prohibited it. So he said: 'O Messenger of Allah! We stud the stallions so that we get honorarium (from the owners of the female horse)!' So he permitted it for honorarium." This Hadith is Hasan Gharib, we do not know of it except as a narration of Ibrahim bin Humaid, from Hisham bin 'Urwah.