CC Madhya 25.3

ei mata mahāprabhu dui māsa paryanta
śikhāilā tāṅre bhakti-siddhāntera anta
Synonyms: 
ei mata — in this way; mahāprabhu — Śrī Caitanya Mahāprabhu; dui māsa paryanta — for two months; śikhāilā — instructed; tāṅre — him; bhakti-siddhāntera anta — all the conclusions of devotional service.
Translation: 
Lord Caitanya Mahāprabhu instructed Śrī Sanātana Gosvāmī in all the conclusions of devotional service for two consecutive months.