The son fulfils his name 'Putra' when he gives joy and saves his parents from hell. In Kapila Gita, the lord as Kapila Muni, through self-knowledge, transports his mother turned disciple, Devahuti, beyond joy and sorrow & heaven and hell, into a state of pure Bliss.
Swami Tejomayananda further clarifies and beautifies this subtle teaching with lucid commentary.
This wonderful teaching can become our passport to Bliss.