Parallel
Matthew 5:23
Patriarchal Greek New Testament (1904) · Berean Standard Bible
Ἐὰν οὖν προσφέρῃς τὸ δῶρόν σου ἐπὶ τὸ θυσιαστήριον κἀκεῖ μνησθῇς ὅτι ὁ ἀδελφός σου ἔχει τι κατὰ σοῦ,
So if you are offering your gift at the altar and there remember that your brother has something against you,