Most of the ceremonies included in the wedding rites came from the Spanish missionaries centuries ago. The cord ceremony featuring the yugal is another ceremony we inherited from them. The yugal or nuptial tie is usually a silken cord or a strand of flowers or coins which the cord sponsors entwine loosely around the necks of the bride and the groom. The yugal is shaped like the number eight, which is said to symbolize the infinity of the bond of marriage.
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Source:
Virtues, Customs and Traditions. http://www.latriquewedding.com/vct.html