Or HaChaim on Genesis 44:21/אור החיים על בראשית מ״ד:כ״א

1 ותאמר אל עבדיך הורדוהו, "you instructed your servants "bring him down!" Yehudah reminded Joseph that he had not accepted their assurances or examined their truthfulness by any other available means except his insistence to bring Benjamin to Egypt. When they told their father about this condition their father did not agree to let Benjamin travel until they had exhausted their food supply.