كتاب الزكاة
Read the English translation first, with the original Arabic directly underneath.
It was narrated from Abu Hurairah that the Prophet (ﷺ) said:
"The Muslim does not have to pay Sadaqah on his slave or his horse."
لَيْسَ عَلَى الْمُسْلِمِ فِي عَبْدِهِ وَلاَ فِي فَرَسِهِ صَدَقَةٌ