Sayyidah Duba'ah bint al-Zubayr bin Abd al-Muttalib (may Allah be pleased with her) narrates from Sayyiduna al-Miqdad bin Amr (may Allah be pleased with him) that on the day of Badr he was riding his horse - which was called 'Subhah' - and the Prophet (peace and blessings be upon him) allotted one share for his horse and one share for him.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17748