John Gill Commentary Deuteronomy 11:15

"And I will give grass in thy fields for thy cattle, and thou shalt eat and be full." — Deuteronomy 11:15 (ASV)

And I will send grass in your fields for your cattle
By giving plentiful showers of rain at proper times, to cause it to spring up and grow, that so there might be food for the cattle of every sort, greater or lesser; see (Psalms 104:13Psalms 104:14) (Zechariah 10:1) ,

that you may eat and be full ;
which refers to the preceding verse as well as to this; and the sense is, that the Israelites might eat of and enjoy the fruits of the earth to satiety; namely, their corn, wine, and oil; and that their cattle might have grass enough to supply them with.