PURPORT
Śrīla Bhaktivinoda Ṭhākura says that Āmbuyā-muluka is the present Ambikā, a city in the Vardhamāna district of West Bengal. Formerly, during the Muslim regime, it was known as Āmbuyā-muluka. In this city there is a neighborhood called Pyārīgañja, and that is where Nakula Brahmacārī used to live.