Musnad Abu Ya'la al-Mawsili 133:16

'Abd al-A'la narrated to us, Sufyan narrated to us, from 'Ali ibn Zayd, from Anas, who said: When Abu Talhah was in an army, he would scatter his quiver before him and say: "My soul is a ransom for your soul, and my face is a shield for your face." He said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The voice of Abu Talhah in the army is better than a battalion."