The morning of third day is Gai Tihar (worship of the cow). In Hinduism, cow signifies prosperity and wealth. In ancient times people benefited a lot from the cow. Its milk, dung, even urine was used for purposes like purification. Thus, on this day people show their gratefulness to the cow by garlanding and feeding them with the best grass. Houses are cleaned and the doorways and windows are decorated with garlands made of sayapatri (marigolds) and makhamali (chrysanthemums) flowers.
In the evening Laxmi, the goddess of wealth is thanked for all the benefits that were bestowed on the families by lighting oil lamps (Diyo) or candles on doorways and windows to welcome prosperity and well being. At night the girls enjoy dancing and visiting all the houses of the neighborhood with musical instruments singing and dancing known as Bhailo all night long collecting money as tip from houses and share the bounty amongst themselves.
From the third day onward tihar is celebrated with Deusi and Bhailo with light and fireworks. Deusi is mostly sung by the boys while the Bhailo is sung by the girls. Deusi is balladic and tells the story of the festival, with one person narrating and the rest as the chorus. In return the home owners give them money, fruit and selroti (a Nepali roundel made of rice flour and sugar). Nowadays social workers, politician, and young people visit local homes, sing these songs, and collect funds for welfare and social activities.