Musannaf Ibn Abi Shayba 17:1290

Ghundar narrated to us, from Shu'bah, from Mansur, from Salim ibn Abi al-Ja'd, from Nabit ibn Sharit, from Jaban, from Abdullah ibn Amr, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "The one who reminds others of his favors (mannan) shall not enter Paradise."