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When someone heard the chanting of the holy name from the mouth of Śrī Caitanya Mahāprabhu, and someone else heard this chanting from that second person, and someone again heard this chanting from the third person, everyone in all countries became a Vaiṣṇava through such disciplic succession. Thus everyone chanted the holy name of Kṛṣṇa and Hari, and they danced, cried and smiled. (Madhya-lila 17. 48-49)
The transcendental power or potency of the Hare Kṛṣṇa mahā-mantra is herein explained. First, the holy name is vibrated by Śrī Caitanya Mahāprabhu. When someone hears from Him directly, he is purified. When another person hears from that person, he also is purified. In this way the purification process is advanced among pure devotees. Śrī Caitanya Mahāprabhu is the Supreme Personality of Godhead, and no one can claim His potency. Nonetheless, if one is a pure devotee, hundreds and thousands of men can be purified by his vibration. This potency is within every living being, provided he chants the Hare Kṛṣṇa mahā-mantra offenselessly and without material motives. When a pure devotee chants offenselessly, another person will become a Vaiṣṇava, and from him another Vaiṣṇava will emerge. This is the paramparā system. (Purport)
Śrī Caitanya-caritāmṛta
By His Divine Grace A. C. Bhaktivedanta Swami Prabhupāda
Madhya-lila Chapter 17, Text 47-49
TEXT 47
yei grāma diyā yāna, yāhāṅ karena sthiti
se-saba grāmera lokera haya ’prema-bhakti’
SYNONYMS
yei grāma—which villages; diyā yāna—the Lord goes through; yāhāṅ—where; karena—takes; sthiti—rest; se-saba—all those; grāmera—of the villages; lokera—of the people; haya—there is awakening of; prema-bhakti—ecstatic love of God.
TRANSLATION
In all the villages through which the Lord passed and in all the places He rested on His journey, everyone was purified and awakened to ecstatic love of God.
TEXTS 48-49
keha yadi tāṅra mukhe śune kṛṣṇa-nāma
tāṅra mukhe āna śune tāṅra mukhe āna
sabe ’kṛṣṇa’ ’hari’ bali’ nāce, kānde, hāse
paramparāya ’vaiṣṇava’ ha-ila sarva deśe
SYNONYMS
keha—someone; yadi—when; tāṅra mukhe—from His mouth; śune—hears; kṛṣṇa-nāma—chanting of the Hare Kṛṣṇa mantra; tāṅra mukhe—from the mouth of such chanters; āna śune—someone else hears; tāṅra mukhe—and from his mouth; āna—someone else; sabe—all of them; kṛṣṇa—Lord Kṛṣṇa’s holy name; hari—another holy name of the Lord; bali’-chanting; nāce—dance; kānde—cry; hāse—smile; paramparāya—by disciplic succession; vaiṣṇava—devotees; ha-ila—became; sarva-deśe—in all countries.
TRANSLATION
When someone heard the chanting of the holy name from the mouth of Śrī Caitanya Mahāprabhu, and someone else heard this chanting from that second person, and someone again heard this chanting from the third person, everyone in all countries became a Vaiṣṇava through such disciplic succession. Thus everyone chanted the holy name of Kṛṣṇa and Hari, and they danced, cried and smiled.
PURPORT
The transcendental power or potency of the Hare Kṛṣṇa mahā-mantra is herein explained. First, the holy name is vibrated by Śrī Caitanya Mahāprabhu. When someone hears from Him directly, he is purified. When another person hears from that person, he also is purified. In this way the purification process is advanced among pure devotees. Śrī Caitanya Mahāprabhu is the Supreme Personality of Godhead, and no one can claim His potency. Nonetheless, if one is a pure devotee, hundreds and thousands of men can be purified by his vibration. This potency is within every living being, provided he chants the Hare Kṛṣṇa mahā-mantra offenselessly and without material motives. When a pure devotee chants offenselessly, another person will become a Vaiṣṇava, and from him another Vaiṣṇava will emerge. This is the paramparā system.
text pasted from: Causless Mercy
Lord Caitanya image from; Krishna Path
The Hare Krishna Movement 