Musannaf Ibn Abi Shayba 3:4094

'Umar ibn Ayyub narrated to us, from Ja'far, from Maymun, who said: Ibn 'Umar would not pray behind a man who did not pray except on Friday. He said: So I mentioned that to 'Abd al-Karim, and he said: Ibn 'Umar would not pray behind a man who spoke, except on Friday.