Sunan an-Nasa'i 4644
سنن النسائي#4644SahihIt was narrated from'Abdullah bin 'Umar that 'Aishah wanted to but a slave woman to set her free, but her people said:"We will sell her to you on condition that her loyalty (Walla) is to us," She mentioned that top the Messenger of Allah and he said: "That should not stop you. Loyalty belongs to the one who sets the slave free
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiSahih - Agreed Upon
In-book reference: 44:196