Yibbum

Yibbum (pronounced [jibum], Hebrew: ייבום) is the form of levirate marriage found in Judaism. As specified by Deuteronomy 25:5–10, the brother of a man who died without children is permitted and encouraged to marry the widow. However, if either of the parties refuses to go through with the marriage, both are required to go through a ceremony known as halizah, involving a symbolic act of renunciation of their right to perform this marriage.

Jewish law (halakha) has seen a gradual decline of yibbum in favor of halizah, to the point where in most contemporary Jewish communities, and in Israel by mandate of the Chief Rabbinate, yibbum is prohibited.