وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ، أَنَّهُ قَالَ سَأَلْتُ سَعِيدَ بْنَ الْمُسَيَّبِ عَنْ صَدَقَةِ الْبَرَاذِينِ، فَقَالَ وَهَلْ فِي الْخَيْلِ مِنْ صَدَقَةٍ

Yahya related to me from Malik that Abdullah ibn Dinar said, "Iasked Said ibn al-Musayyab about zakat on work-horses, and he said,'Is there any zakat on horses ?' " Translation Not Available

Book Ref: Muwatta Imam Malik Book 17 Hadith 617
Web Ref:  Muwatta Imam Malik Book 17 Hadith 41