Sometimes, upon seeing the Supreme Personality of Godhead, Prahlāda Mahārāja would loudly call in full anxiety. He sometimes lost his shyness in jubilation and began dancing in ecstasy, and sometimes, being fully absorbed in thoughts of Kṛṣṇa, he felt oneness and imitated the pastimes of the Lord.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नदति क्वचिदुत्कण्ठो विलज्जो नृत्यति क्वचित् । क्वचित्तद्भावनायुक्तस्तन्मयोऽनुचकार ह
nadati kvacidutkaṇṭho vilajjo nṛtyati kvacit | kvacittadbhāvanāyuktastanmayo'nucakāra ha
SB 7.4.40