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Matthew 5:23
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Ἐὰν οὖν προσφέρῃς τὸ δῶρόν σου ἐπὶ τὸ θυσιαστήριον, καὶ ἐκεῖ 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,