The purpose of celebrating Bhaiya Dooj is to cement the solid bond between brothers and sisters.
The holy festival of Bhai-Dooj is celebrated two days after Diwali.
On this day, a sister applies 'Tilak' (a mixture of holy turmeric and rice seeds) on her brother's forehead and wishes for his long life, success and health. This year Bhaiya Dooj is celebrated on October 25.
The history goes way back, when sisters used to prepare for this day even before Diwali and on this day, they used to specially prepare special dishes and sweets for their beloved brothers.