Bhai Dooj, also known as Bhai Phota in Bengal, Bhai Tika in Nepal, and Bhai Beej in Maharashtra, is a significant Hindu festival that celebrates the bond between brothers and sisters. Falling on the second day of the bright fortnight of the Kartika month in the Hindu calendar, Bhai Dooj is observed on the fifth day of Diwali, marking the final day of the Diwali festival.  The festival holds deep cultural and religious significance, emphasizing the unique and special relationship between siblings. Bhai Dooj follows a similar sentiment as Raksha Bandhan, another Hindu festival dedicated to the bond between brothers and sisters, but it carries its own rituals and traditions.

On Bhai Dooj, sisters perform aarti for their brothers, applying a tilak on their foreheads. This tilak is often made of vermillion and sandalwood paste, symbolizing the sister's prayers for her brother's well-being and long life. The act of applying the tilak is accompanied by the exchange of sweets and gifts between siblings, symbolizing love and mutual appreciation. One of the distinctive rituals of Bhai Dooj involves the sister performing a ceremony known as the 'tika' on her brother. During this ritual, the sister applies a small amount of yogurt, rice, and a special paste made from aromatic substances on her brother's forehead. The ceremony is believed to have auspicious and protective qualities, signifying the sister's love and prayers for her brother's prosperity and success.

The legend associated with Bhai Dooj varies across different regions of India. In one popular narrative, it is said that on this day, Lord Krishna visited his sister Subhadra after defeating the demon Narakasura. Subhadra, overjoyed by her brother's return, performed aarti and applied a tilak on Krishna's forehead. The tradition of sisters applying tilak to their brothers on Bhai Dooj is said to commemorate this mythological event.

Another legend associated with Bhai Dooj is the story of Yama, the Lord of Death, and his sister Yamuna. According to this narrative, Yama visited his sister Yamuna, who warmly welcomed him, performing aarti and applying a tilak on his forehead. Yama, touched by his sister's love and hospitality, granted her a boon that whoever receives a tilak from their sister on this day would be blessed with a long and healthy life. Bhai Dooj is not only a celebration of the bond between brothers and sisters but also a reflection of the cultural richness and diversity within India. The rituals and customs associated with the festival may vary across different regions, adding a unique flavor to the celebration.

The festival serves as a time for families to come together, reinforcing the importance of sibling relationships. It fosters love, understanding, and a sense of responsibility among siblings, creating cherished memories and strengthening family ties. Bhai Dooj, with its cultural, religious, and social significance, continues to be a joyous occasion that brings siblings closer and celebrates the enduring bond between brothers and sisters.