CC Madhya 20.341

dharma pravartana kare vrajendra-nandana
preme gāya nāce loka kare saṅkīrtana
Synonyms: 
dharma pravartana kare — introduces a particular type of religious activity; vrajendra-nandana — Kṛṣṇa Himself; preme — in love; gāya — chants; nāce — dances; loka — all people; kare — perform; saṅkīrtana — congregational chanting.
Translation: 
“Lord Kṛṣṇa, the son of Nanda Mahārāja, personally introduces the occupational duty of the Age of Kali. He personally chants and dances in ecstatic love, and thus the entire world chants congregationally.