Ibn Abi Amrah narrates from his father (may Allah be pleased with him) that he said: We came to the Messenger of Allah (peace and blessings be upon him), four in number, and we had a horse with us. He (peace and blessings be upon him) gave each one of us one share, and gave the horse two shares.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12874