In the kingdom of Hamsadhawaja

The kingdom where the horse was grabbed by the rock belonged to the king Hamsadhwaja. He was a righteous king. He had two sons Surath and Sudhanwa.
The king got the message that the Yudhistira's horse had come to his kingdom and Arjuna had come with the horse.The king was pleased that a son of Pandu had come to his kingdom. He thought Krishna would be Arjuna and he would get to see Krishna. He gave orders for the horse to be caught.
He also gave orders for Arjuna to be caught. If Arjuna was caught, Krishna would follow, and the king's wish of seeing Krishna would be fulfilled.
A huge copper cauldron was got and was filled with oil. It was heated up. The king then said his soldiers needs to go and fight Arjuna. If they refused they were to be thrown in the hot oil.
The king's son Sudhanwa started preparing himself for war. Hearing this, his wife wanted to know where he was going. When she heard this, she asked him to stay the night with her. She said she wanted a son and wanted her husband for that. She was fine with him leaving in the morning. Sudhanwa said he was going to fight so that he could get to see Krishna. If Krishna came, all prosperity would follow.
His queen persisted and then Sudhanwa said if he stayed back with her, his father would throw him the hot oil.  His wife managed to convince him. Sudhanwa took off his armor and climbed up on the cot with his wife. Pleasing his wife, he got ready and started for battle.His sister and mother came and blessed him and asked him to go fast and get Arjuna, so that they would get to see Krishna.
The army had already gathered and Sudhanwa was not there. Angry, the king gave orders for Sudhanwa to be thrown in the hot oil. Sudhanwa then came and the king angry said, what was the point in coming now.All had come except his son. Sudhanwa said he would start immediately.
Prabhavati, Sudhanwa's wife, came there and said it was because of her that he had got delayed.
The king was furious. He said you gave priority to passion over your duty as Kshatriya. Turning to his priest, he asked what was to be done.
The priest said you said you will stick to your word and now are bending. I will not stay in your kingdom anymore. Saying this, the priest left.
Hamsadhwaja said he would go behind the priest and get him back. He gave orders for his son to be thrown in the oil.
Hearing this, Sudhanwa said he would end his life in the hot oil. He said he had one regret that he would be seeing Krishna.