What is marring?

Assuming you meant "marriage," here is some information:

Marriage is a legal and formal union between two people, typically recognized by law, in which they become partners in a personal and often sexual relationship. Marriage is often considered a social and cultural institution, as well as an important religious sacrament in some faiths. The process of getting married typically involves obtaining a marriage license and having a wedding ceremony, which may be religious or secular in nature. In most cultures, marriage is an important step in adulthood, and may be accompanied by other cultural practices, such as dowries, bride prices, or engagement rings. Historically, marriage has been used to cement political alliances, establish property rights, and regulate sexual behavior. In modern times, marriage is often seen as a way to form a family and establish a lifelong partnership.