erusin
Erusin, from the Hebrew term erusin, refers to the betrothal stage in the traditional Jewish two-stage marriage process. In classical halakha, erusin creates a binding legal bond between a man and a woman, which, together with the subsequent stage of nissu'in, constitutes a full marriage. Once erusin has taken effect, the couple is considered married in a limited sense and are forbidden to marry others; the bond can only be dissolved by a divorce (get) or by death.
Erusin can be effected through three classical methods: kesef (money or its equivalent) given by the groom
The practical and legal implications of erusin have varied across time and denominations. In traditional practice,