CC Madhya 12.114

premāveśe prabhu kahe ‘kṛṣṇa’ ‘kṛṣṇa’-nāma
ekale premāveśe kare śata-janera kāma
Word for word: 
prema-āveśe — in ecstatic love; prabhu — Lord Śrī Caitanya Mahāprabhu; kahe — says; kṛṣṇa kṛṣṇa-nāma — the holy name of Lord Kṛṣṇa; ekale — alone; prema-āveśe — in ecstatic love; kare — does; śata-janera kāma — the work of hundreds of men.
Translation: 
As Śrī Caitanya Mahāprabhu was vibrating the holy name of Kṛṣṇa in ecstatic love, He Himself was performing the work of hundreds of men.