Caitanya-caritāmṛta 13.117
cāri-vatsara ghare pitā-mātāra sevā kailā vaiṣṇava-paṇḍita-ṭhāñi bhāgavata paḍilā
[chaari-vatsara ghare pitaa-maataara sevaa kailaa vaishnava-pandita-thaani bhaagavata padilaa]
Blended reading (Sanskrit + English inline)
cāri-vatsara ghare pitā-mātāra sevā kailā vaiṣṇava-paṇḍita-ṭhāñi bhāgavata paḍilā
In accordance with the instructions of Śrī Caitanya Mahāprabhu, he continuously rendered service to his mother and father for four years. He also regularly studied Śrīmad-Bhāgavatam from a self-realized Vaiṣṇava.
My note
Source: vedabase.io