Sunan Ibn Majah
2517
Sahih+3

Jabir bin `Abdullah was heard to say:“We used to sell our slave women and the mothers of our children (Umahat Awaldina) when the Prophet (ﷺ) was still living among us, and we did not see anything wrong with that.”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi