Ashvapati performed a journey in search of an answer to the imperative need of human race.
However, this was accompanied by a caveat that if he ever revealed the content of bird speak to anyone, even his own mother, that he would forthwith lose his life.
One day, the King and his Queen were strolling through the palace gardens when Ashvapati happened to overhear the conversation of a pair of mated swans.
Despite being aware of the fact that Ashvapati could not divulge the content of the conversation to her without losing his life, Kaikeyi's mother insisted on knowing the cause of the King's mirth.
When Ashvapati realised that his wife cared little for his life or well-being, he had her banished to her parents' home.