Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 20

Sanskrit:

मेघागमोत्सवा हृष्टा: प्रत्यनन्दञ्छिखण्डिन: ।गृहेषु तप्तनिर्विण्णा यथाच्युतजनागमे ॥ २० ॥

ITRANS:

meghāgamotsavā hṛṣṭāḥpratyanandañ chikhaṇḍinaḥgṛheṣu tapta-nirviṇṇāyathācyuta-janāgame

Translation:

The peacocks became festive and cried out a joyful greeting when they saw the clouds arrive, just as people distressed in household life feel pleasure when the pure devotees of the infallible Supreme Lord visit them.

Purport:

After the dry summer season, the peacocks become jubilant with the arrival of the first thundering rain clouds, and thus they dance in great happiness. Śrīla Prabhupāda comments, “We have practical experience of this: many of our students were dry and morose previous to their coming to Kṛṣṇa consciousness, but having come into contact with devotees they are now dancing like jubilant peacocks.”