Srimad Bhagavatam Canto 07, Chapter 04, Text 28

SB 7.4.28

nirvairaya prasantaya
 sva-sutaya mahatmane
prahradaya yada druhyed
 dhanisye ’pi varorjitam
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
When Hiranyakasipu teases the great devotee Prahlada, his own son, who is peaceful and sober and who has no enemy, I shall kill Hiranyakasipu immediately, despite the benedictions of Brahma.
 
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Of all sinful activities, an offense to a pure devotee, or Vaisnava, is the most severe. An offense at the lotus feet of a Vaisnava is so disastrous that Sri Caitanya Mahaprabhu has compared it to a mad elephant that enters a garden and causes great havoc by uprooting many plants and trees. If one is an offender at the lotus feet of a brahmana or Vaisnava, his offenses uproot all his auspicious activities. One should therefore very carefully guard against committing vaisnava-aparadha, or offenses at the lotus feet of a Vaisnava. Here the Lord clearly says that although Hiranyakasipu had received benedictions from Lord Brahma, these benedictions would be null and void as soon as he committed an offense at the lotus feet of Prahlada Maharaja, his own son. A Vaisnava like Prahlada Maharaja is described herein as nirvaira, having no enemies. Elsewhere in Srimad-Bhagavatam (3.25.21) it is said, ajata-satravah santah sadhavah sadhu-bhusanah: a devotee has no enemies, he is peaceful, he abides by the scriptures, and all his characteristics are sublime. A devotee does not create enmity with anyone, but if someone becomes his enemy, that person will be vanquished by the Supreme Personality of Godhead, despite whatever benedictions he may have received from other sources. Hiranyakasipu was certainly enjoying the fruitful results of his austerities, but here the Lord says that as soon as he committed an offense at the lotus feet of Prahlada Maharaja he would be ruined. One’s longevity, opulence, beauty, education and whatever else one may possess as a result of pious activities cannot protect one if one commits an offense at the lotus feet of a Vaisnava. Despite whatever one possesses, if one offends the lotus feet of a Vaisnava he will be vanquished.
Srimad Bhagavatam Canto 07, Chapter 04, Text 27
Srimad Bhagavatam Canto 07, Chapter 04, Text 29