While herding the very beautiful bulls, the Lord, who was the reservoir of all opulence and fortune, used to blow His flute, and thus He enlivened His faithful followers, the cowherd boys.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
स एव गोधनं लक्ष्म्या निकेतं सितगोवृषम् । चारयन्ननुगान्गोपान् रणद्वेणुररीरमत्
sa eva godhanaṃ lakṣmyā niketaṃ sitagovṛṣam | cārayannanugāngopān raṇadveṇurarīramat
SB 3.2.29