Ali narrated that:the Messenger of Allah said: “I have exempted you from having to pay Zakat on horses and slaves, bring one quarter of one-tenth of every forty Dirhan: one Dirham.”
Hadith No. 1790
Sunan Ibn Majah
Gradings:
Al-Albani:
Hasan
Muhammad Fouad Abd al-Baqi:
Hasan
Shuaib Al Arnaut:
Daif
Zubair Ali Zai:
Daif