Sunan an-Nasa'i 2470
سنن النسائي#2470SahihIt was narrated from Abu Hurairah that the Prophet said:"A person does not have to pay Sadaqah on his horse or his slave
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiHasan
In-book reference: 23:36