Caitanya-caritāmṛta 16.58
ācāryaratna-ādi yata mukhya bhakta-gaṇa madhye madhye prabhure karena nimantraṇa
[aachaaryaratna-aadi yata mukhya bhakta-gana madhye madhye prabhure karena nimantrana]
Blended reading (Sanskrit + English inline)
ācāryaratna-ādi yata mukhya bhakta-gaṇa madhye madhye prabhure karena nimantraṇa
All the chief devotees, headed by Candraśekhara [Ācāryaratna], used to extend invitations to Śrī Caitanya Mahāprabhu periodically.
My note
Source: vedabase.io