Because of his association with perfect, unalloyed devotees who had nothing to do with anything material, Prahlāda Mahārāja constantly engaged in the service of the Lord’s lotus feet. By seeing his bodily features when he was in perfect ecstasy, persons very poor in spiritual understanding became purified. In other words, Prahlāda Mahārāja bestowed upon them transcendental bliss.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स उत्तमश्लोकपदारविन्दयो- र्निषेवयाकिञ्चनसङ्गलब्धया । तन्वन् परां निर्वृतिमात्मनो मुहु- र्दुःसङ्गदीनान्यमनःशमं व्यधात्
sa uttamaślokapadāravindayo- rniṣevayākiñcanasaṅgalabdhayā | tanvan parāṃ nirvṛtimātmano muhu- rduḥsaṅgadīnānyamanaḥśamaṃ vyadhāt
SB 7.4.42