Musnad Ahmad 907:132

'Abdullah narrated to us, Sa'id ibn Yahya ibn Sa'id al-Umawi narrated to me, my father narrated to me, Mujalid narrated to us, from 'Amir, from Jabir ibn Samurah al-Suwa'i, who said: I heard the Messenger of Allah, peace and blessings of Allah be upon him, during the Farewell Pilgrimage, saying: "This religion will continue to be manifest over everyone who opposes it; it will not be harmed by those who differ from it or depart from it."