Chalitza is a Jewish ceremonial procedure that allows a woman to be released from the obligation of levirate marriage, where a man must marry his deceased brother's widow if they had no children. This practice is rooted in the biblical commandment found in Deuteronomy, and it has significant implications in Jewish law and family dynamics. The ceremony involves the widow removing the shoe of her brother-in-law and spitting in front of him, symbolizing her rejection of the levirate marriage obligation.