Sahih Bukhari, Chapter: Gifts, The superiority of giving and extortion of

I intended to buy Barira but her masters stipulated that her Wala should be for them. When the Prophet (SAW) was told about it, he said to me, "Buy and manumit her, as the Wala is for the liberator." Once Barira was given some meat, and the Prophet (SAW) asked, "What is this?" I said, "It has been given to Barira in charity." He said, "It is sadaqa for her but a gift for us." Barira was given the option (to stay with her husband or to part with him). Abdur Rahman (a sub-narrator) wondered, "Was her husband a slave or a free man?" Shuba (another sub-narrator) said, "I asked Abdur-Rahman whether her husband was a slave or a free man. He replied that he did not know whether he was a slave or a free man."