John Gill Commentary Genesis 43:25

"And they made ready the present against Joseph`s coming at noon: for they heard that they should eat bread there." — Genesis 43:25 (ASV)

And they made ready the present against Joseph came at noon , &c.] They took it out of their vessels or bags in which they brought it, having unladen their asses, and disposed of it in a proper manner to present it to him when he came home at noon to dine: for they heard that they should eat bread there ; dine there, bread being put for all provision: this was told them, very probably, by the steward, or by some of the servants in the house, or they overheard what Joseph said to the steward, (Genesis 43:16) .