[If] a man divorces his wife and then remarries her, she is permitted to the yavam; but R' Eliezer forbids [her]. So too, [if] someone divorces an orphan and then re- marries her, she is permitted to the yavam; but R' Eliezer forbids [her]. [If] a child was given in marriage by her father and was then divorced, she is like an orphan during her father's lifetime. [If] he remarries her, all agree that she is forbidden to the yavam.