Sahih al-Bukhari 6751
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."
حَدَّثَنَا حَفْصُ بْنُ عُمَرَ، حَدَّثَنَا شُعْبَةُ، عَنِ الْحَكَمِ، عَنْ إِبْرَاهِيمَ، عَنِ الأَسْوَدِ، عَنْ عَائِشَةَ، قَالَتِ اشْتَرَيْتُ بَرِيرَةَ فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ اشْتَرِيهَا، فَإِنَّ الْوَلاَءَ لِمَنْ أَعْتَقَ ‏"‏‏.‏ وَأُهْدِيَ لَهَا شَاةٌ فَقَالَ ‏"‏ هُوَ لَهَا صَدَقَةٌ، وَلَنَا هَدِيَّةٌ ‏"‏‏.‏ قَالَ الْحَكَمُ وَكَانَ زَوْجُهَا حُرًّا، وَقَوْلُ الْحَكَمِ مُرْسَلٌ‏.‏ وَقَالَ ابْنُ عَبَّاسٍ رَأَيْتُهُ عَبْدًا‏.‏