Musannaf Ibn Abi Shaybah 23848 — A man whose wife dies leaving young

Musa said that his grandmother died while with Abu Burdah (may Allah have mercy on him), and Abu Burdah took some of her slave-girls for himself. I said to him: "Did Ibn Awn narrate to you from Muhammad that if a person intends to take the slave-girl of his young child, he should have her valued against himself and make witnesses on their behalf to her price?" He said: "Yes, I have heard it."