Musnad Ahmad 1458

It was narrated from Mus"ab bin Sa"d, from his father, that A platter was brought to the Prophet (ﷺ) and he ate from it, but there was some left over. The Messenger of Allah (ﷺ) said: "A man will come from this direction who is one of the people of Paradise and he will eat these leftovers." Sa"d (رضي الله عنه) said: “I had left my brother ‘Umair doing wudoo’ and I said: It will be "Umair. Then "Abdullah bin Salam (رضي الله عنه) came and ate it.”