Bhai Dooj, also known as Yam Dwitiya, celebrates the sacred bond between siblings. Know the religious significance of the festival, the legend of Yamaraj and Yamuna, and the rituals observed. Bhai Dooj celebrates the special bond between brothers and sisters. From the story of Lord Yama and Yamuna to the popular legend of Lord Krishna and Subhadra, know why the festival is observed and.