tasmai balir varuna-pasa-yantritah
samarhanam nopajahara purvavat
sa-vrida-nicina-mukho babhuva ha
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Being bound by the ropes of Varuna, Bali Maharaja could not offer befitting respect to Prahlada Maharaja as he had before. Rather, he simply offered respectful obeisances with his head, his eyes being inundated with tears and his face lowered in shame.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Since Bali Maharaja had been arrested by Lord Vamanadeva, he was certainly to be considered an offender. Bali Maharaja seriously felt that he was an offender to the Supreme Personality of Godhead. Certainly Prahlada Maharaja would not like this. Therefore Bali Maharaja was ashamed and hung his head.