Book Online oriya Pandit For Janeu, Yagnopavit Sanskar, Upanayan Yagnopavit Sanskar. The sacred thread ceremony - Installation of the principles of Indian culture - taking pledge to lead disciplines, dignified spiritual life . The Significance of the Sacred Thread Ceremony Before Marriage Thread ceremony or Upanayana as its known worldwide is a sacred rite of passage ritual for all Hindus. The sacred thread or Janeu is worn by Hindu boys following a series of rituals and steps. It is performed when a Hindu boy is growing up. Originally, it marked the point when Hindu boys started their formal education