John 13:29

For some thought, because Judas had the money box, that Jesus had said to him, "Buy those things we need for the feast," or that he should give something to the poor.

Surrounding context

13:28 But no one at the table knew for what reason He said this to him.

13:29 For some thought, because Judas had the money box, that Jesus had said to him, "Buy those things we need for the feast," or that he should give something to the poor.

13:30 Having received the piece of bread, he then went out immediately. And it was night.

Translation and sources