Musannaf Ibn Abi Shaybah

Hazrat Juwaybir (may Allah be pleased with him) narrates that we were in the region of Khurasan when Hazrat Umar bin Abdul Aziz wrote to us that it has reached us through reliable narrators that the Holy Prophet (peace and blessings be upon him) granted three shares to a horseman: two shares for his horse and one share for himself, and granted one share to a foot soldier. And regarding horses, he said: Arab, Muqaraf, and Baradhin (different breeds of horses) are equal in this ruling.