dhrtya bali-samah krsne
prahrada iva sad-grahah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
This child will be like Bali Maharaja in patience, a staunch devotee of Lord Krsna like Prahlada Maharaja, a performer of many asvamedha [horse] sacrifices and a follower of the old and experienced men.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Bali Maharaja: One of the twelve authorities in the devotional service of the Lord. Bali Maharaja is a great authority in devotional service because he sacrificed everything to please the Lord and relinquished the connection of his so-called spiritual master who obstructed him on the path of risking everything for the service of the Lord. The highest perfection of religious life is to attain to the stage of unqualified devotional service of the Lord without any cause or without being obstructed by any kind of worldly obligation. Bali Maharaja was determined to give up everything for the satisfaction of the Lord, and he did not care for any obstruction whatsoever. He is the grandson of Prahlada Maharaja, another authority in the devotional service of the Lord. Bali Maharaja and the history of his dealings with Visnu Vamanadeva are described in the Eighth Canto of Srimad-Bhagavatam (Chapter 11-24).
Prahlada Maharaja: A perfect devotee of Lord Krsna (Visnu). His father, Hiranyakasipu, chastised him severely when he was only five years old for his becoming an unalloyed devotee of the Lord. He was the first son of Hiranyakasipu, and his mother’s name was Kayadhu. Prahlada Maharaja was an authority in the devotional service of the Lord because he had his father killed by Lord Nrsimhadeva, setting the example that even a father should be removed from the path of devotional service if such a father happens to be an obstacle. He had four sons, and the eldest son, Virocana, is the father of Bali Maharaja, mentioned above. The history of Prahlada Maharaja’s activities is described in the Seventh Canto of Srimad-Bhagavatam.