The morning of the third day is Gai Tihar (worship of the cow). In Hinduism, cow is the symbol of prosperity and wealth. In ancient times cows were very useful. Their milk, dung, even urine was used for purpose like purification. So, on this day people worship cow by garlanding and feeding them with the best grass. They clean and decorate the houses. Doorways and windows are decorated by garlands made of Saya Patri (marigolds) and makhamali ("Gomphrena globosa") flowers.