Yahya related to me from Malik from Abdullah ibn Umar from Sulayman ibn Yasar from Irak ibn Malik from Abu Hurayra that the Messenger of Allah ﷺ said, "A muslim does not have to pay any zakat on his slave or his horse."  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ لَيْسَ عَلَى الْمُسْلِمِ فِي عَبْدِهِ وَلاَ فِي فَرَسِهِ صَدَقَةٌ  

Yahya related to me from Malik from Ibn Shihab from Sulayman ibn Yasar that the people of Syria said to Abu Ubayda ibn al-Jarrah, "Take zakat from our horses and slaves," and he refused. Then he wrote to Umar ibn al-Khattab and he (also) refused. Again they talked to him and again he wrote to Umar, and Umar wrote back to him saying, "If they want, take it from them and (then) give it back to them and give their slaves provision." Malik said, "What he means, may Allah have mercy upon him, by the words 'and give it back to them' is, 'to their poor.' "  

أَنَّ أَهْلَ الشَّامِ قَالُوا لأَبِي عُبَيْدَةَ بْنِ الْجَرَّاحِ خُذْ مِنْ خَيْلِنَا وَرَقِيقِنَا صَدَقَةً فَأَبَى ثُمَّ كَتَبَ إِلَى عُمَرَ بْنِ الْخَطَّابِ فَأَبَى عُمَرُ ثُمَّ كَلَّمُوهُ أَيْضًا فَكَتَبَ إِلَى عُمَرَ فَكَتَبَ إِلَيْهِ عُمَرُ إِنْ أَحَبُّوا فَخُذْهَا مِنْهُمْ وَارْدُدْهَا عَلَيْهِمْ وَارْزُقْ رَقِيقَهُمْ قَالَ مَالِكٌ مَعْنَى قَوْلِهِ رَحِمَهُ اللَّهُ وَارْدُدْهَا عَلَيْهِمْ يَقُولُ عَلَى فُقَرَائِهِمْ  

Yahya related to me from Malik that Abdullah ibn Abi Bakr ibn Amr ibn Hazim said, "A message came from Umar ibn Abd al-Aziz to my father when he was in Mina telling him not to take zakat from either honey or horses."  

أَنْ لاَ يَأْخُذَ مِنَ الْعَسَلِ وَلاَ مِنَ الْخَيْلِ صَدَقَةً  

Yahya related to me from Malik that Abdullah ibn Dinar said, "I asked Said ibn al-Musayyab about zakat on work-horses, and he said, 'Is there any zakat on horses ?' "  

فَقَالَ وَهَلْ فِي الْخَيْلِ مِنْ صَدَقَةٍ