Bhyaguto Purne (Byanjanake Punhi)

In the city of Shonitpur, a man-eating demon named Ghantasur extracted a daily tribute of one muri of rice and one human sacrifice. Seeing the townspeople's plight, Lord Vishnu assumed the form of a small frog.

Sitting on the ridge of a field, the frog croaked 'tyarr-tyarr' and taunted Ghantasur; and when the demon, thinking it weaker than himself, rushed to kill it, the frog trapped him in a deep, muddy bog.

With Ghantasur stuck fast in the mire, the townspeople struck him down with their weapons and were set free.

Out of gratitude to the frog, which helped the farmers by eating the insects that attacked the paddy crop and helped bring the demon to his end, the farmers go to the fields on the day of Janai Purnima and feed the frogs various delicacies and rice. This is called 'Byanjanake Punhi' (Bhyaguto Purne) in Newari.