Sri Sri Gaura Nitai

One night Śacīdevī dreamt that the Deities in her house, Kṛṣṇa and Balarāma, had taken the forms of Caitanya and Nityānanda and were fighting one another, as children do, to eat the naivedya, or offering to the Deities. The next day, by the will of Lord Caitanya, Śacīdevī invited Nityānanda to take prasādam at her house. Thus Viśvambhara (Lord Caitanya) and Nityānanda were eating together, and Śacīdevī realized that They were none other than Kṛṣṇa and Balarāma. Seeing this, she fainted.
(CC Ādi 17.17 purport)