Musannaf Ibn Abi Shayba 9:1371

Abu Usama narrated to us, from Yunus bin Abi Ishaq, from Tariq, from Sa'id bin al-Musayyib, who said: "Do not let this verse deceive you: '...except what your right hands possess.' He only intended by it the slave women, and he did not intend by it the male slaves."