Rashi, on Isa 30:23

“And rain shall be given to thy seed, wheresoever thou shalt sow in the land: and the bread of the corn of the land shall be most plentiful, and fat. The lamb in that day shall feed at large in thy possession:”

“And He shall give I.e., the Holy One, blessed be He, shall give the rain for your seed. fat (וְשָׁמֵן) an expression of fat. Therefore, its accent is below (on the last syllable) and it is voweled with a kamatz (tzeireh). a fattened lamb until the lambs will become fat and wide. lamb (כַּר) a lamb. Alternatively, a wide plain. Comp. (Gen. 12:10) “the plain (כִּכַּר) of the Jordan,” (below 32:15) “Carmel,” meaning a wide plain, full of grain.”

Imported from an open dataset — not yet checked against the printed edition.