Narada asks sage Pulastya about Vamana incarnation:
Vamana Purana is one of the eighteen Puranas written by sage Vyasa. It contains tales pertaining to Lord Vishnu in his Vamana (dwarf) incarnation. Sage Pulastya while giving answers to Narada’s enquiry narrates the tale of Vamana Purana.
All the Puranas give glimpses of Indian civilization and culture and Vamana Purana is no exception. It also teaches the virtue of righteousness and religiousness. Vamana Purana not only contains the divine tales of Nara-Narayana and Goddess Durga but it also contains tales of famous devotees like Prahlada, the salvation of Gajendra (elephant) etc.
Sage Narada asks Pulastya- “O revered sage! Why did Sri Hari take the incarnation of Vamana? Why did Prahlada fight a battle with the deities despite being a devotee of Lord Vishnu? How did Sati, Daksha Prajapati’s daughter become Mahadeva’s consort in her next birth? I am eager to know the answers to all these questions.”
Pulastya replied- “O Narada! Once, Sati requested Lord Shankar to make arrangements for a permanent abode. At that time, Lord Shankar had his abode at Mandar Mountain. Summer season was approaching and Sati quite rightly had apprehensions of living in the open. Lord
Shankar told her that as he was a recluse, he never felt a need of a permanent dwelling. Though Sati was not satisfied by his answers yet she kept quiet. This way, both of them continued to live there. The summer season had passed and now it was the turn of rainy season to arrive. Sati made the same request to Lord Shankar. This time, Lord Shankar told her that it was impossible for him to construct a house, as he had no wealth. He also told her that he had only a tiger skin as his clothing, the king cobra- his sacred thread, Padma and Pingal (snakes)- his ear-rings and Keval and Dhananjay as his armlets.
After hearing this, Sati became worried as to how she would pass the rainy season without a home. Lord Shankar then assured her that this problem would be easily solved if she lived above the clouds. This way, she would remain untouched by the showers. After this, both of them ascended towards the sky and started living above the clouds. From that day onwards, Lord Shankar came to be known as Jeebhootvahan (one whose vehicle is the cloud).