Mattityahu 19:5-7

Orthodox Jewish Bible

⁵ And he said, Because of this, YAAZAV ISH ES AVIV VES IMMO VDAVAK BISHTO VHAYU LVASAR ECHAD (a man will leave his father and his mother and will be joined to his isha (wife), and the two will be one flesh, BERESHIS 2:24).

⁶ So they are no longer shnayim (two) but basar echad (one flesh). Therefore, whatever Hashem joined together, let no man divide asunder.

⁷ They say to him, Why then did Moshe Rabbenu give the mitzvah to give the get, the sefer keritut, and send her away?