Parallel
Matthew 5:36
Nestle 1904 Greek New Testament · Berean Standard Bible
μήτε ἐν τῇ κεφαλῇ σου ὀμόσῃς ὅτι οὐ δύνασαι μίαν τρίχα λευκὴν ποιῆσαι ἢ μέλαιναν
Nor should you swear by your head, for you cannot make a single hair white or black.