CC Madhya 15.37

eka-dina mahāprabhu nityānande lañā
dui bhāi yukti kaila nibhṛte vasiyā
Word for word: 
eka-dina — one day; mahāprabhu — Śrī Caitanya Mahāprabhu; nityānande lañā — taking Lord Nityānanda Prabhu; dui bhāi — two brothers; yukti kaila — consulted; nibhṛte vasiyā — sitting in a solitary place.
Translation: 
One day the two brothers, Śrī Caitanya Mahāprabhu and Nityānanda Prabhu, consulted with each other while sitting together in a solitary place.