Śrī Caitanya Caritamrta · Text Ādi 6.29
ভক্তি–উপদেশ বিনু তাঁর নাহি কার্য ।
অতএব নাম হৈল ‘অদ্বৈত আচার্য’ ॥ ২৯ ॥
bhakti-upadeśa vinu tāṅra nāhi kārya
ataeva nāma haila ‘advaita ācārya’
Since He has no other occupation than to teach devotional service, His name is Advaita Ācārya.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.