Or HaChaim on Genesis 43:26/אור החיים על בראשית מ״ג:כ״ו

1 ויביאו לו את המנחה, They brought him the gift, etc. They had prepared this gift in a room which was especially set aside for such gifts, whereas they themselves proceeded to a different room, a room exclusively Joseph's. The Torah tells us that the brothers had entered a room in which Joseph was present in order to present their gift.