Caitanya-caritāmṛta 3.77
saṅkīrtana-pravartaka śrī-kṛṣṇa-caitanya saṅkīrtana-yajñe tāṅre bhaje, sei dhanya
[sankeertana-pravartaka shree-krishna-chaitanya sankeertana-yajne taanre bhaje, sei dhanya]
Blended reading (Sanskrit + English inline)
saṅkīrtana-pravartaka śrī-kṛṣṇa-caitanya saṅkīrtana-yajñe tāṅre bhaje, sei dhanya
Lord Śrī Kṛṣṇa Caitanya is the initiator of saṅkīrtana [congregational chanting of the holy name of the Lord]. One who worships Him through saṅkīrtana is fortunate indeed.
My note
Source: vedabase.io