Caitanya-caritāmṛta 7.72
ratha-yātrā-dine prabhu kīrtana ārambhilā pūrvavat sāta sampradāya pṛthak karilā
[ratha-yaatraa-dine prabhu keertana aarambhilaa poorvavat saata sampradaaya prithak karilaa]
Blended reading (Sanskrit + English inline)
ratha-yātrā-dine prabhu kīrtana ārambhilā pūrvavat sāta sampradāya pṛthak karilā
On the day of the car festival, Śrī Caitanya Mahāprabhu began the congregational chanting. As He had done previously, He divided all the devotees into seven groups.
My note
Source: vedabase.io