Parallel
Mark 4:31
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ὡς κόκκον σινάπεως, ὅς, ὅταν σπαρῇ ἐπὶ τῆς γῆς, μικρότερος πάντων τῶν σπερμάτων ἐστὶν τῶν ἐπὶ τῆς γῆς·
It is like a mustard seed, which is the smallest of all seeds sown upon the earth.