ENOfficial
It was narrated that 'Ali, may Allah e pleased with him, said: "The Messenger of Allah (ﷺ) said: 'I have exempted you from (having to pay Zakah on) horses and slaves. Pay the Zakah on your wealth, for every two hundred (Dirhams), five."'
Source: sunnah.com
Other translations
Arabic
أَخْبَرَنَا مَحْمُودُ بْنُ غَيْلاَنَ، قَالَ حَدَّثَنَا أَبُو أُسَامَةَ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي إِسْحَاقَ، عَنْ عَاصِمِ بْنِ ضَمْرَةَ، عَنْ عَلِيٍّ، رضى الله عنه قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " قَدْ عَفَوْتُ عَنِ الْخَيْلِ وَالرَّقِيقِ فَأَدُّوا زَكَاةَ أَمْوَالِكُمْ مِنْ كُلِّ مِائَتَيْنِ خَمْسَةً " .
sunnah.com