Musnad Ahmad 33:279

Abu Mu’awiyah narrated to us, from al-A’mash, and Ibn Numayr narrated to us, from al-A’mash, from Abu Sufyan, from Jabir, who said: An-Nu’man ibn Qawqal came to the Prophet, may Allah bless him and grant him peace, and said: "O Messenger of Allah, what do you see if I permit the lawful, forbid the unlawful, and perform the prescribed prayers?" — and Ibn Numayr said in his narration: "And I do not add anything to that" — "shall I enter Paradise?" The Messenger of Allah, may Allah bless him and grant him peace, said to him: "Yes."