CC Ādi 10.39
lukāiyā dui prabhura yāṅra ghare sthita
Nandana Ācārya, the seventeenth branch of the Caitanya tree, is celebrated within the world because the two Prabhus [Lord Caitanya and Nityānanda] sometimes hid in his house.
Nandana Ācārya was another companion of Lord Caitanya Mahāprabhu during His kīrtana pastimes in Navadvīpa. Śrīla Nityānanda Prabhu, as Avadhūta, traveled on many pilgrimages, and when He first came to Śrī Navadvīpa-dhāma He remained hidden in the house of Nandana Ācārya. It is there that He first met all the devotees of Lord Caitanya Mahāprabhu. When Caitanya Mahāprabhu exhibited His mahā-prakāśa, He asked Rāmāi Paṇḍita to call Advaita Prabhu, who was hiding in the home of Nandana Ācārya, for Śrī Caitanya Mahāprabhu could understand that He was hiding. Similarly, Lord Caitanya also sometimes hid in the home of Nandana Ācārya. In this connection one may refer to Śrī Caitanya-bhāgavata, Madhya-khaṇḍa, chapters six and seventeen.