Musnad Abu Ya'la al-Mawsili 6:88

Zuhayr narrated to us, Ishaq bin Isa narrated to us, Malik narrated to us, from Abu al-Nadr, from Amir bin Sa’d, who said: I heard my father say: I did not hear the Messenger of Allah, may Allah bless him and grant him peace, say of any living person walking [on the earth] that he is from the people of Paradise, except for Abdullah bin Salam.