It is narrated from Hasan (may Allah have mercy on him) that a mukatab asked for the freedom of one or two people, and it was given to him. When it became quite a lot in the view of Hazrat Abu Musa (may Allah be pleased with him), he called him. He came, bringing what had been given to him. Then he (Abu Musa) saw, gave him what he had asked for, and kept the remainder, and with it, he freed one or several slaves.