Mark 10:11

11AndκαὶHe saysλέγειto themαὐτοῖς·WhoeverὋςἂνshall divorceἀπολύσῃtheτὴνwifeγυναῖκαof himαὐτοῦandκαὶshall marryγαμήσῃanotherἄλληνcommits adulteryμοιχᾶταιagainstἐπ’herαὐτήν,

And He says to them, “Whoever shall send away his wife and shall marry another, he commits adultery against her.