based on the verses from Kumar Shambhav of Kalidasa's work
Lord Shiva commences on his penance, and Parvathi Devi, with her companions, is engaged by King Himalaya to assist Shiva with his arrangements. Parvathi falls in Love with Shiva and wishes to achieve Shiva’s Love. Kamadeva (The God of Love), with his companion Spring and wife Rati, appears at Shiva’s place and, with the gods’ instruction, tries to initiate the spark of Love in the heart of Yogi Shiva by shooting his love arrows.
Shiva’s penance gets disturbed, and he opens his third eye and turns Kamadeva into ashes. Parvathi’s desire breaks into pieces; she endures in acts of Tapas to win both his Love and as her husband. Shiva being pleased with her penance, surrenders himself to Parvathi and decides to give away half of his body to her. The disciples around him saw in awe when for the first time, the body of the Shiva merged with his beloved – Only the left eye was anointed with collyrium, and the bosom on the left side bulged large. And suddenly, the waist seems slender while the pubic region looks wide, and the Ardhanariswara, the amalgamate figure of Shiva and Parvathy, emerges.