Lieberman clause
The Lieberman clause is a clause included in a ketubah (Hebrew: כתובה Jewish wedding document), created by and named after Talmudic scholar and Jewish Theological Seminary of America professor Saul Lieberman, that stipulates that divorce will be adjudicated by a modern bet din (rabbinic court) in order to prevent the problem of the agunah, a woman not allowed to remarry religiously because she had never been granted a religious divorce. It was first introduced in the 1950s by rabbis in Judaism's Conservative movement.