Once, Diti, the daughter of Daksha, gave birth to two sons, who became the fiercest demons known.
They were called Hiranyaksha and Hiranyakashipu. Both of them were very fond of gold.
Hiranyaksha specially dug the earth deep to collect as much gold as he could get for himself. Suddenly, because of the force of his digging, the earth fell into the Garbodhaka Ocean.
Hearing Mother Earth calling for help, Lord Vishnu appeared to rescue her from the ocean. He took the form of a boar which was His Varaha form.
Lord Varaha lifted the earth from the ocean, but Hiranyaksha did not like this. He attacked Lord Varaha, who had the earth safely held between His tusks.
Lord Varaha fought Hiranyaksha and killed him. Then He returned the earth back to her place.
[Do not mind any extra para gaps. Webnovel has a formatting error which does not allow me to correct it.]