It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) disliked shikal among horses. Shikal is (a horse) that has white on its right hind leg and its left foreleg, or white on its right foreleg and its left hind leg.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12894