Musnad Ahmad 26:810

Abu Mu'awiyah narrated to us, Al-A'mash narrated to us, from Abdullah ibn Murrah, from Masruq, from Abdullah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "He is not of us who strikes the cheeks, or tears the collars, or calls out with the call of the Jahiliyyah."