The King of Nepal named Palinjan wanted to perform human sacrifice and offer his virgin daughter to Mahakali. Lord Sastha hears of it and stops the king from doing so. The king realizes his mistake in turn offers his daughter Pushkala in marriage to Sastha.
On the other side the kingdom of King Pinjaka is in deep waters of trouble from the Bhetala demons. Sashta rescues the Pinjakan kingdom and in return he offers him his daughter Poorna in marriage. This marriage angers Palinjan who couldn’t fathom the idea that Sastha married another women while he was still married to his daughter Pushkala and questions him as to how many more he would marry. Palinjan then curses Sastha to take rebirth on Earth and stay for 12 years as human. Sastha in turn curses him to be born as king of Pandala dynasty and be childless. The curse came in handy.
Purna and Pushkala were his wives and he had a son Satyaka. The aim of dharma is perfection (Purna) and prosperity (Pushkalatva) is achieved by dharma and wisdom. Finally, the adherence to dharma enables to achieve truthfulness (Satya) that is Satyaka. The two devis is also aid to represent two margas to reach Him. Poorna represents Bhakthi Marga and Pushkala Ghana Marga.
Meanwhile Mahishi gets the boon from Lord Brahma that she cannot be killed by Hara or Hari and be killed only by their child, which is beyond nature’s aspect. And that she be killed only by that child be in human form and be 12 years of age.
