Parallel
Mark 4:29
Patriarchal Greek New Testament (1904) · Berean Standard Bible
ὅταν δὲ παραδῷ ὁ καρπός, εὐθέως ἀποστέλλει τὸ δρέπανον, ὅτι παρέστηκεν ὁ θερισμός.
And as soon as the grain is ripe, he swings the sickle, because the harvest has come (note: See Joel 3:13, including LXX.).”