Musnad Abu Ya'la al-Mawsili 6:66

Zuhayr narrated to us, 'Affan ibn Muslim narrated to us, Hammad ibn Salamah narrated to us, 'Asim ibn Bahdalah informed us, from Mus'ab ibn Sa'd, from his father: That the Messenger of Allah (ﷺ) was brought a bowl, and he ate from it, and some remainder remained. He said, "A man from the people of Paradise will come from this mountain pass to eat this remainder." Sa'd said: I had left my brother 'Umayr performing ablution, so I said, "It is 'Umayr." Then 'Abdullah ibn Salam came and ate it.