Musannaf Ibn Abi Shaybah 39364 — The affair of Zayd bin Harithah

Abu Fazarah narrates that the Prophet (peace and blessings be upon him) saw Sayyiduna Zayd bin Harithah (may Allah be pleased with him) as a slave boy with locks of hair, whom his people had made to stand in al-Batha to sell him. He (peace and blessings be upon him) came to Sayyidah Khadijah (may Allah be pleased with her) and said: I have seen a slave boy in al-Batha whom the people have made to stand in order to sell him. If I had his price, I would buy him. Sayyidah Khadijah said: What is his price? He (peace and blessings be upon him) said: Seven hundred. Sayyidah Khadijah said: Take seven hundred, go and buy him. So he (peace and blessings be upon him) bought him and brought him to Sayyidah Khadijah, and said: The thing is that if he were mine, I would free him. Sayyidah Khadijah said: This slave is yours. So he (peace and blessings be upon him) freed him.