Sahih Bukhari

Narrated `Aisha:I bought Barira (a female slave). The Prophet (ﷺ) said (to me), ""Buy her as the Wala' is for the manumitted."" Once she was given a sheep (in charity). The Prophet (ﷺ) said, ""It (the sheep) is a charitable gift for her (Barira) and a gift for us."" Al-Hakam said, ""Barira's husband was a free man."" Ibn `Abbas said, 'When I saw him, he was a slave