Musannaf Ibn Abi Shayba 3:1675

Hashim ibn al-Qasim narrated to us, from Shu'bah, from Tawbah al-'Anbari, who said: I heard Bakr ibn 'Abd Allah al-Muzani saying: Indeed, Qays ibn 'Abbad al-Qaysi prayed over his beast of burden, Labad.