בראשית מו:לד פירוש: רש״י, רשב״ם, רד״ק וטור הארוך

בעבור תשבו בארץ גשן IN ORDER THAT YE MAY ABIDE IN THE LAND OF GOSHEN — and this is the land that you require, for it is a land of pasture. If you tell him that you are inexperienced in other work he will send you far away from him and settle you there.

For [all shepherds] are an abomination in Egypt - All shepherds were disgraceful in their eyes, for sheep were loathsome to them - whether for eating or for sacrifice - as it is written, "If we sacrifice what is abominable to the Egyptians..." (Ex. 9:22)

בעבור תשבו בארץ גשן, seeing it was a land in which cattle were being raised. Furthermore, Joseph did what he did in order to prevent Pharaoh from enlisting his brothers in Pharaoh’s political and military echelon.