Caitanya-caritāmṛta 17.298
advaita-ācārya-gosāñi bhakta-avatāra kṛṣṇa avatāriyā kailā bhaktira pracāra
[advaita-aachaarya-gosaani bhakta-avataara krishna avataariyaa kailaa bhaktira prachaara]
Blended reading (Sanskrit + English inline)
advaita-ācārya-gosāñi bhakta-avatāra kṛṣṇa avatāriyā kailā bhaktira pracāra
Śrīla Advaita Ācārya Prabhu appeared as an incarnation of a devotee. He is in the category of Kṛṣṇa, but He descended to this earth to propagate devotional service.
My note
Source: vedabase.io