שׁבר sheber — “fragment, crumb, hence, grain.” בר bar — “pure,” “winnowed,” hence, “corn” (grain).

ש…

And he said, behold, I have heard that there is corn in Egypt ,
&c.] This explains what is meant by the phrase he sa…

Jacob saw the grain his neighbors had bought in Egypt and brought home. It is a spur to exertion to see others supplied.