SB 6.9.44
atho isa jahi tvastram
grasantam bhuvana-trayam
grastani yena nah krsna
tejamsy astrayudhani ca
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Therefore, O Lord, O supreme controller, O Lord Krsna, please annihilate this dangerous demon Vrtrasura, Tvasta’s son, who has already swallowed all our weapons, our paraphernalia for fighting, and our strength and influence.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The Lord says in Bhagavad-gita (7.15-16):
na mam duskrtino mudhah
prapadyante naradhamah
mayayapahrta-jñana
asuram bhavam asritah
catur-vidha bhajante mam
janah sukrtino ’rjuna
arto jijñasur artharthi
jñani ca bharatarsabha
“Those miscreants who are grossly foolish, lowest among mankind, whose knowledge is stolen by illusion, and who partake of the atheistic nature of demons, do not surrender unto Me. O best among the Bharatas [Arjuna], four kinds of pious men render devotional service unto Me — the distressed, the desirer of wealth, the inquisitive, and he who is searching for knowledge of the Absolute.”
The four classes of neophyte devotees who approach the Supreme Personality of Godhead to offer devotional service because of material motives are not pure devotees, but the advantage for such materialistic devotees is that they sometimes give up their material desires and become pure. When the demigods are utterly helpless, they approach the Supreme Personality of Godhead in grief and with tears in their eyes, praying to the Lord, and thus they become almost pure devotees, free from material desires. Admitting that they have forgotten pure devotional service because of extensive material opportunities, they fully surrender to the Lord, leaving to His consideration whether to maintain them or annihilate them. Such surrender is necessary. Bhaktivinoda Thakura sings, marabi rakhabi — yo iccha tohara: “O Lord, I fully surrender unto Your lotus feet. Now, as You desire, You may protect me or annihilate me. You have the full right to do either.”