173 Yevamot 15/5-6

(5) [If] one [of a man's two wives] states, "He died," and one states, "He did not die", the one who states "He died" may marry and and collect her Ketubah, and the one who states "He did not die" may not marry or collect her Ketubah. [If] one [of a man's two wives] states, "He died," and one states, "He was killed", Rabbi Meir says: Since they contradict each other they may not marry. Rabbi Yehudah and Rabbi Shimon say: Since they both agree he is no longer alive, they may marry. [If one] witness states, "He died" and [one] witness states, "He did not die"; or [if one] woman states "He died" and [one] woman states, "He did not die", she may not marry.

(6) [If] a woman and her husband went overseas and she came and said, "My husband died", she may marry and collect her Ketubah, but her rival [from the original husband] is forbidden [to marry]. If she [the rival] was the daughter of an Israelite [married] to a priest she may eat Terumah [a portion of a crop given to a priest which becomes holy upon separation and may only be consumed by priests and their households], these are the words of Rabbi Tarfon. Rabbi Akiva says: This is not the way to prevent her from sin, rather she is forbidden to marry and forbidden to eat Terumah.