CC Antya 3.150
āsiyā vasilā durgā-maṇḍapa-upare
Lord Nityānanda, who is omniscient because He is the Supreme Personality of Godhead, came to the house of Rāmacandra Khān and sat down on the altar of the Durgā-maṇḍapa.
Well-to-do Hindu gentlemen constructed their houses with a place called the Durgā-maṇḍapa for the worship of the goddess Durgā. There they generally held worship of the goddess every year in the month of Āśvina (September-October). Rāmacandra Khān possessed such a Durgā-maṇḍapa at his residence.