Bhaktivedanta Narayana Gosvami
From the book “Sri Vraja-maṇḍala-parikramā”:
This well is also known as Sapta-sāmudrika-kūpa. Mahārāja Nanda used to draw water from it. It is said that the demigods created it for the service of the Supreme Lord Śrī Kṛṣṇa. Its water stays warm in the winter and cool in the summer, and liberates one who bathes in it from all sins.
Rajashekhara Dasa
From the book “Chaurasi-kosa Vraja Mandala Parikrama”:
This is where Nanda Maharaja obtained his families’ drinking water. The word ‘kupa’ means a ‘well’. Another name for this well is Sapta-samudra Kupa, which means the well whose water contains ‘seven sacred oceans’. It is also said that this well never goes dry.
