Dasavatar
Jaya And Vijaya Cursed At the beginning of the process of creation, Lord Brahma created the ‘Four Kumaras’. As the Four Kumaras were born from the mind by just a desire (manas) of Brahma they are referred to as his Manasaputras. Their names are : Sanaka, Sanandana, Sanatana and Sanat Kumara.
When the four Kumaras came into existence, they were all embodiments of pure qualities. They did not have any sign of negative qualities like pride, anger, attachment, lust, material desires (Kaam, Krodh, Lobh, Moh, Ahankaar etc). Now Lord Brahma had created these four Kumaras so that they could help in the process of creation. However, the Kumaras refused his order to procreate and instead devoted themselves to God and celibacy (brahmacharya). They requested their father for the boon of remaining perpetually five years old.
Due to the boon from their father Brahma and the strength of their tapa, the Four Kumaras looked like 5 year olds. Jaya and Vijaya, the gatekeepers of the Vaikuntha stopped the Kumaras at the gate, thinking them to be children. They told the Kumaras that Shri Vishnu is resting and that they cannot see them now. Sanat Kumars replied Lord loves His devotees and is always available for His devotees. You are no one to stop us from seeing our dear Lord. But Jay Vijay didn't understand their point and kept on arguing for a long time. Though Sanat Kumara are very pure and have no trigunas of Maya in them (Sattva Rajas, Tamas) but by the plan of Lord to teach His gate keepers a lesson, He circulated anger in pure hearts of Sanat Kumara. The enraged Kumaras cursed both the Dwara Palas, the gatekeepers Jaya and Vijaya, that they would have to give up their divinity and be born as mortals on Earth and live there.
When Jaya and Vijaya were cursed by the Sanat Kumaras at the gateway of Vaikuntha Loka, Shri Vishnu appeared before them and the gatekeepers requested Shri Vishnu to lift the curse of the Kumaras. Shri Vishnu says that the curse of Kumaras cannot be reverted. Instead, He gives Jaya and Vijaya two options. The first option is to take seven births on Earth as a devotee of Vishnu, while the second is to take three births as His enemy. After serving either of these sentences, they can re-attain their stature at Vaikuntha and be with Him permanently. Jaya and Vijaya cannot bear the thought of staying away from Vishnu for seven lives, they agree to the second option to become enemies.