Musannaf Ibn Abi Shayba 17:1287

'Abd al-Rahim ibn Sulayman narrated to us, from Yazid ibn Abi Ziyad, from Mujahid and Salim ibn Abi al-Ja'd, from Abu Sa'id al-Khudri, who said: The Messenger of Allah (may Allah bless him and grant him peace) said: "The one who reminds others of his favors (al-mannan) shall not enter Paradise."