The soul that became Bhagavan Ajitnath, in its earlier incarnation, was the great king Vimalvahan of Susima City in Mahavideha area.  He lea a pious life in spite of the available princely grandeur.  At an appropriate time, he became an ascetic under Arindam Suri.  Meditating about the omniscient and liberated souls and indulging in harsh penance, he purified his soul to a level where he could earn the Tirthankar-nam-and-gotra-karma.  Completing his age, he reincarnated as a god in the Vijaya-anuttar-dimension.

  After completing his age in the dimension of gods, he descended into the womb of Queen Vijaya Devi, wife of king Jitshatru of Vinita town.  Queen Vijaya Devi saw fourteen auspicious dreams.  Vaijayanti, the wife of king Jitshatru's younger brother, Sumitra, also saw the same fourteen dreams.  This was a queer coincidence.  When the augers were consulted they informed that Vijaya Devil will give birth to a Tirthankar and Vaijayanti to a Chakravarti (monarch of sic continents).

During the period of the queen's pregnancy, the influence of king Jitshatru enhanced to an extent that even the enemy kingdoms sought and negotiated friendly treaties with him.  It became a common practice to say, "King Jitshatru is invincible (Ajit)".

The queen gave birth to a son on the eighth day of the bright half of the month of Magh.  Inspired by the popular lore, the king named the new born as Ajit.  The same night Vaijayanti also gave birth to a son who was named Sagar.  When both the princes came of age they were married.  Time passed with profusion of happiness.

When king Jitshatru became old and wanted to devote the last part his life to spiritual pursuit, he called his younger brother and asked him to take over the throne.  Sumitra had no desire for the kingdom; he too wanted to become an ascetic.  Both the princes were called and offered the kingdom.  Ajit Kumar was naturally a detached person since childhood, and so he too declined.  At last prince Sagar ascended the throne.

Ajit Kumar became an ascetic in his youth and went into remote and dense forests for his meditation and penance.  His personality and the intensity of his lofty practices cast a pacifying influence all around.  Natural enemies in the animal kingdom, like lion and cow, wolf and deer, and mongoose used to come and sit around him peacefully.

After a twelve-year period of deep meditation and other spiritual practices he attained omniscience on the eleventh day of the bright half of the month of Paush.  The gods created the divine pavilion and Bhagavan Ajitnath gave his eloquent and magnetic discourses.  Thousands of people accepted the path of renunciation.

King Sagar, during this period, conquered the six continents and became a Chakravarti.  King Meghvahan and Vidyadhar Bhim, the ruler of the island of Rakshasas (demons), were the illustrious contemporaries of Emperor Sagar.  Once they went to a discourse of Bhagavan Ajitnath.  There, Vidyadhar Bhim was drawn towards spiritual life.  He became so detached that he gave his kingdom including the famous cities of Lanka and Patal Lanka to king Meghvahan.  He also gave all his knowledge and miraculous powers to Meghvahan.  Besides this he gave a divine necklace of nine large and shining beads.  Meghvahan was the first king of the Rakshah clan in which the famous king Ravana was born.

Death of Sagar's Sixty Thousand Sons

Emperor Sagar had thousands of queens and sixty thousand sons.  Eldest among them was Janhu Kumar.  Once all the princes went for an outing.  When they arrived at the base of Ashtapad hills, they dug up large ditches and canals.  In their youthful abandon they flooded these canals with the water of river Ganges.  This flash flood inundated the houses and villages of the lower gods known as Nag Kumars.  The king of these gods, Jwalanprabh came and tried to stop them in vain.  The unruly princes were intoxicated with their regal power.  At last Jwalanprabh lost his temper and turned all the sixty thousand princes to ashes.

This sudden death of all his sons with a traumatic experience for Emperor Sagar.  He handed over the empire to his eldest grandson, Bhagirath, and took Diksha from Bhagavan Ajitnath.

When his last moments were approaching, Bhagavan Ajitnath went to Sammetshikhar.  With one thousand other ascetics, he commenced his final meditation.  He attained Nirvana on the fifth day of the bright half of the month of Chaitra.