When lord Shiva went away. Sandhya got up and went to the place where Medhatithi was performing his yagya. She made a mental resolution to have that brahmin as her husband, who in reality was Vashishtha and then entered into the sacrificial fire. The fire of the yagya burnt her body and carried it ti the solar-system, where it was divided by the sun-god into three parts and established in his chariot. The names of these three parts were Pratah-Sandhya, Madhyanha- Sandhya and Sayam-Sandhya. Sandhya‘s vital force was absorbed by lord Shiva.
When the yagya ended, the sages were surprised to see the presence of a girl, who was radiating like gold in the sacrificial fire. They took out that girl child from that yagya-kunda. The sages then brought up that girl with love and affection. She was named Arundhati.
When she attained the age of five, Brahma Vishnu and Mahesg arrived and married her with
Vashishtha. Arundhati enjoyed a happy life and became famous for her chastity.
Brahma told Narada that since the day he was humiliated by Shiva, he had grudges against him and wanted to take revenge. “I wanted to subdue the arrogance of Shiva by proving it to him that even he could be binded by attachment. I asked Daksha and sages like Mareech as to how this feat could be achieved. As a result ‘Rati’ and ‘Kama’ manifested. I instructed Kama to influence Shiva by his powers. Kama agreed but requested me to create a suitably divine women for Shiva. Myself and Daksha became worried and during that time we exhaled fragrant air through our nostrils, which resulted into the creation of spring season. The spring season was looking divinely beautiful in her physical form. I handed over her to Kama and thus all the three of them
(spring season, Kama and Rati) went to influence lord Shiva who was in his deep state of meditation.