Musannaf Ibn Abi Shayba 16:223

Abu Bakr narrated to us, he said: Abdullah ibn Numayr narrated to us, from Isma'il ibn 'Abd al-Malik, from 'Ata', who said: The companions of the Messenger of Allah, may Allah bless him and grant him peace, when food was brought near, would not wipe their hands until they had cleaned them by licking.