Musannaf Ibn Abi Shayba 16:79

Abu Bakr narrated to us, he said: Abu Khalid al-Ahmar and Waki’ narrated to us, from Hisham ibn ‘Urwah, from Fatimah bint al-Mundhir, from Asma bint Abi Bakr, she said: We slaughtered a horse during the time of the Messenger of Allah, may Allah bless him and grant him peace, and we ate of its meat, or we obtained some of its meat.