Ramban on Genesis 42:25/רמב"ן על בראשית מ״ב:כ״ה

1AND TO GIVE THEM PROVISION FOR THE WAY. The reason for saying this is so that they should not consume the food which they bought in the course of the journey. He informed them of this for he gave them the provisions for the journey in a kindly fashion so that they should be able to bring the brother [Benjamin] to him, for he said, “I have no intention of harming you if your words are verified.”