Caitanya-caritāmṛta 1.22
aṣṭādaśa-varṣa kevala nīlācale sthiti āpani ācari’ jīve śikhāilā bhakti
[ashtaadasha-varsha kevala neelaachale sthiti aapani aachari’ jeeve shikhaailaa bhakti]
Blended reading (Sanskrit + English inline)
aṣṭādaśa-varṣa kevala nīlācale sthiti āpani ācari’ jīve śikhāilā bhakti
For eighteen continuous years, Lord Śrī Caitanya Mahāprabhu remained at Jagannātha Purī and, through His personal behavior, instructed all living entities in the mode of devotional service.
My note
Source: vedabase.io