Musnad Ahmad 8:110

Sufyan narrated to us, from ‘Amr, who said: I heard Ibn Abi Mulaykah, from ‘Ubayd Allah ibn Abi Nahik, from Sa‘d ibn Abi Waqqas, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "He is not of us who does not chant the Quran."