Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 41

Sanskrit:

कृष्ण: कमलपत्राक्ष: पुण्यश्रवणकीर्तन: ।स्तूयमानोऽनुगैर्गोपै: साग्रजो व्रजमाव्रजत् ॥ ४१ ॥

ITRANS:

kṛṣṇaḥ kamala-patrākṣaḥpuṇya-śravaṇa-kīrtanaḥstūyamāno ’nugair gopaiḥsāgrajo vrajam āvrajat

Translation:

Then lotus-eyed Lord Śrī Kṛṣṇa, whose glories are most pious to hear and chant, returned home to Vraja with His elder brother, Balarāma. Along the way, the cowherd boys, His faithful followers, chanted His glories.

Purport:

When the glories of Śrī Kṛṣṇa are vibrated, both the speakers and the hearers are purified and become pious.