“And take second (i.e., more) money (מֹשְׁנֶה כֶּסֶף is different from מִשְׁנֶה־כֶּסֶף doubling of the money = double money, Gen 43:15) in your hand; and the money that returned in your sacks take with you again; perhaps it is a mistake,” i.e., was put in your sacks by mistake.