Sarg 37/3 - Sanat Kumaar Tells Raavan About Raam 

Seeing Raavan in thinking position, Maharshi Sanat Kumar said - "Hey mighty Raavan, Vishnu Bhagvaan will surely fulfill your wishes and will fight with you when the time comes." Raavan said - "Hey kind Rishi, What is His form (Swaroop). Please tell me that too." Sanat Kumaar said - "Hey Raavan, Bhagvaan Vishnu is the Aadi Purush (first man). He is everywhere. His form is endless as well as minute. All the three Lok are His creation only. Nobody - Devtaa, Naag, Daitya - can see Him. To who He wants to have His Darshan, only he can see Him. 

Hey Raavan, If you want to have His Darshan then listen to me - there will be a king named Dashrath in Ikshwaaku Vansh. His eldest son will be Raam. He will be the incarnation of Vishnu. He will live in forest with His younger brother and wife by the order of His father. I told you about Vishnu who is the Swaamee of everybody."

Agastya Muni said - "So Hey Raam, Raavan got very happy to hear all this from Sanat Kumaar and continued to wander in search of fights." Raam also got happy to hear this story and insisted Agastya Muni to tell some more stories.

Sarg 37/4 - Why Raavan Abducted Seetaa

Agastya Muni said - Hey Raam, Raavan abducted Seetaa only to get the death by you. I told you this as I heard it from Naarad Jee. This Kathaa destroys all sins and give Moksh. Whoever tells and hears this Kathaa with Bhakti, he does not come back here.

Sarg 37/5 - Raavan and the Mightiest People

Agastya Jee further said - "One day Devarshi Naarad was coming back from Brahm Lok by skyway. Raavan was also going the same way. Seeing Naarad Jee, Raavan greeted him joining his palms and said - "Hey Bhagvan, You know about all Lok. Kindly tell me that habitants of which Lok are the mightiest ones. With whom I can fight as I wish?" Naarad Jee said - "Hey king of Raakshas, There is a continent named Shwet. There live very mighty and huge people. You can go there and fight with them." 

Raavan asked - "What is the reason that the mighty people are born there?" Naarad Jee said - "Hey Raajan, They are not mighty because of doing Yagya or Tap, or giving donations, or living with discipline. In fact whoever were killed by Vishnu's Shaarang bow, the same are born there being more mighty and live there. And they all worship Vishnu."

Hearing Naarad Jee, Raavan thought for some time, then he went to Shwet Dweep to fight people there. Naarad Jee also liked fights so he also went there. Raavan arrived there roaring on his Pushpak Vimaan. But he was very surprised to see that even Pushpak Vimaan wouldn't stand there with the grace of that Dweep. Raavan's ministers got scared, they said - "We can't even tolerate the grace of this Dweep then how we will fight here?" and they ran away.

Then Raavan went on that Dweep alone. Seeing Raavan coming, a woman held his hand smiling and asked - "Whose son are you? And why have you come here?" Raavan angrily said - "My name is Raavan and I am Muni Vishravaa's son and I have come here with the desire of fight. But I am very surprised that I don't see any man here." Hearing Raavan one of the women there caught his hand and took him around like a boy and said to another woman - "Look, I have caught a black 10-headed 20-armed insect." Raavan got angrier at this statement and he bit her hand. She left his hand, but another woman held his hand and flew in the sky along with him. She dropped him from there. Raavan fell into the sea and drowned.

So Hey Raam, Devarshi was happy to see all this Leelaa there. We heard this story also from Naarad Jee, so I told you now.