Last week we attended the upanayanam (sacred thread ceremony) of my cousin. The purohit who did the ceremony helped us understand the nuances of each mantram and we even got to know the historical(mythological) background behind a famous mantram. I do not want to spoil the show by revealing the name of the mantram right here. Read on and enjoy! :)
Hence when a person takes up brahmacharyam, he is given a dhandi(stick) of porasu maram.