CC Madhya 20.336
- ‘kṛṣṇa-padārcana’ haya dvāparera dharma
- ‘kṛṣṇa’-varṇe karāya loke kṛṣṇārcana-karma
kṛṣṇa-pada-arcana—worshiping the lotus feet of Kṛṣṇa; haya—is; dvāparera—of Dvāpara millennium; dharma—the occupational duty; kṛṣṇa-varṇe—in a blackish color; karāya—induces; loke—to the people; kṛṣṇa-arcana-karma—the activities of worshiping Lord Kṛṣṇa.
“In Dvāpara-yuga the people’s occupational duty was to worship the lotus feet of Kṛṣṇa. Therefore Lord Kṛṣṇa, appearing in a blackish body, personally induced people to worship Him.