The Messenger of Allah ﷺ forbade the earnings of slave-women.
حدثنا يحيى بن زكريا حدثنا شعبة عن محمد بن جحادة عن أبي حازم
نهى رسول الله ﷺ عن كسب الإماء
No references are available.
Its isnad is sahih. Muhammad bin Jahada, with a dammah on the jim, Awdi, Kufi, his reliability was established earlier: 2030. I will add here that Bukhari mentioned him in Al-Kabir 1/1/54, Ibn Saad 6:233-234, and Ibn Abu Hatim 3/2/222.The hadith was narrated by Bukhari 3:378 from Muslim bin Ibrahim, and 9:435 from Ali bin Jaad, both of them from Shubah, with this same isnad. It will also come again, at length and abridged, at 8554, 8957, 9638, 9857, 10234. See also 7963.