Caitanya-caritāmṛta 3.110
caitanyera avatāre ei mukhya hetu bhaktera icchāya avatare dharma-setu
[chaitanyera avataare ei mukhya hetu bhaktera ichchaaya avatare dharma-setu]
Blended reading (Sanskrit + English inline)
caitanyera avatāre ei mukhya hetu bhaktera icchāya avatare dharma-setu
Therefore the principal reason for Śrī Caitanya’s descent is this appeal by Advaita Ācārya. The Lord, the protector of religion, appears by the desire of His devotee.
My note
Source: vedabase.io