(4) باب فِي كَسْبِ الإِمَاءِ
Narrated Rafi' b. Khadij:
The Messenger of Allah (ﷺ) forbade earnings of a slave-girl unless it is known from where it came. (ID)
Reference (ID): Sunan Abi Dawud 3427 (ID)
In-book reference (ID): Book 24, Hadith 12 (ID)
English translation (ID): Book 23, Hadith 3420 (ID)