So Simon Peter motioned to him to find out whom he was talking about.
In context
22The disciples looked at one another, at a loss to know which of them he meant. 23One of his disciples, the one Jesus loved, was reclining close at Jesus’ side. 24So Simon Peter motioned to him to find out whom he was talking about. 25Leaning back, then, against Jesus’ chest, he asked him, “Lord, who is it?” 26Jesus answered, “It is the one for whom I will dip this piece of bread and give it to him.” Then he dipped the piece of bread, and he gave it to Judas, son of Simon Iscariot.
