Chhath Puja is one of the biggest festivals of eastern India. The four-day long festival starts with Nahaay Khaay. This is the first day of Chhath Puja. The Parvaitins take a holy bath, after which the entire house, its surroundings and pathways to the Ghat are thoroughly cleaned. The Parvaitin usually cooks Sattvik Lauka Bhaat (Bottle Gourd and Bengal Gram Lentil preparation with Arva Rice Bhaat). This preparation is served to the deity in the afternoon as Bhog. This initiates the Parv and is the last meal of the Parvaitin during Chhath Puja. The food is then eaten to protect the mind from thoughts of vengeance.
The second day is celebrated as Kharna. On this day, the devotees are not allowed to drink even a single drop of water. In the evening, they eat gur ke kheer (Kheer made up of jaggery), called Rasiaav, together with Roti.