It is narrated from Maymun bin Mehran that it spread among the army of Umar bin Abdul Aziz that Umar bin Abdul Aziz considered the sale of an umm walad permissible. Then a man came to him and asked about this matter. It then became clear that Umar bin Abdul Aziz believed even more strictly in the freedom of an umm walad than the man who asked the question, and also that, according to Umar bin Abdul Aziz, this was also the opinion of Umar bin Khattab (may Allah be pleased with him).