व्यवसायेन ते ऽनेन दुष्करेण मनस्विनाम् ।
तपोनिष्ठेन भवता जितो ऽहं दितिनन्दन ॥ २० ॥
vyavasayena-by determination; te-your; anena-this; duskarena-difficult to perform; manasvinam-even for great sages and saintly persons; tapah-nisthena-aimed at executing austerity; bhavata-by you; jitah-conquered; aham-I; diti-nandana-O son of Diti.
My dear son of Diti, with your great determination and austerity you have done what was impossible even for great saintly persons, and thus I have certainly been conquered by you.
In regard to the word jitah, Srila Madhva Muni gives the following quotation from the Sabda-nirnaya: parabhutam vasa-stham ca jitabhid ucyate budhaih. "If one comes under someone else's control or is defeated by another, he is called jitah." Hiranyakasipu's austerity was so great and wonderful that even Lord Brahma agreed to be conquered by him.