Jainism, attained omniscience (Kevala-jnana) on the bank of the river Rju-kula.
He toured all over the country, preaching the principle of Jainism. When he reached Pavapura, he sat down on a pure slab of stone in a park studded with many ponds. He did not move out for two days. He went into a state of pure meditation (sukla-dhyana) and became a Siddha or holy man.
It is assumed by both Jain sects that the site of the nirvana of Mahavira is near Bihar-Sherif, where a magnificent Jaina temple stands in the centre of a big lake. A man called Bhagavan Mahavira discarded the body and the bondage of all Karmas on that night of Diwali, and attained deliverance.
Followers have been celebrating Diwali with lights since the nirvana of Lord Mahavira.