Muhammad bin Yahya bin Hiban محمد بن يحيى بن حبان · The Book of Zakah

"The Muslim does not have to pay Sadaqah on his slave or his horse."

"The Messenger of Allah said: 'I have exempted you from (having to pay Zakah on) houses and slaves, and there is no Zakah on less than two hundred (Dirhams)."

"A woman came to the Messenger of Allah with a daughter of hers, and on her daughter's arm were two bangles" - a similar report, in Mursal form.

"I heard 'Umar say: 'I gave a horse to someone to ride in the cause of Allah, the Mighty and Sublime, and the one who kept it neglected it. I wanted to buy it back from him, and I thought that he would sell it at a cheap price. I asked the Messenger for Allah about that and he said: Do not buy it, even if he gives it to you for a Dirham. The one who takes back his…