Muhammad bin Muhajir bin Abi Muslim محمد بن مهاجر · Jihad (Kitab Al-Jihad)

The Messenger of Allah (ﷺ) said: Keep to every dark bay horse with a white blaze and white on the legs, or sorrel with a white blaze and white on the legs , or black with a white blaze and white on the legs.

Abu Hurairah said “The Prophet (ﷺ) disapproved the shikal horses. Shikal are the horses that are white on their right hind leg and white on their left foreleg or white on their right foreleg and left hind leg. Abu Dawud said “This means alternate legs”.