Sunan an-Nasā'ī 2470✓ 5Sahih
أَخْبَرَنَا عُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ خُثَيْمٍ، قَالَ حَدَّثَنَا أَبِي، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " لَيْسَ عَلَى الْمَرْءِ فِي فَرَسِهِ وَلاَ فِي مَمْلُوكِهِ صَدَقَةٌ " .
It was narrated from Abu Hurairah that the Prophet said:"A person does not have to pay Sadaqah on his horse or his slave