Śrī Caitanya Upaniṣad
The Caitanyopaniṣad is indeed a rare text, and Śrīla Bhaktivinoda Ṭhākura searched for this book in many places. From Sambalpur, the exalted scholar, Paṇḍita Madhusūdana Dāsa, sent a copy in the form of an ancient manuscript to the Ṭhākura. Later, Paṇḍita Śrī Madhusūdana Dāsa became the very first initiated disciple of Śrīla Bhaktivinoda Ṭhākura. At the request of the Vaiṣṇavas, Ṭhākura Bhaktivinoda composed a Sanskrit commentary on the Caitanyopaniṣad called the Caitanya-caraṇāmṛta. The following year, 1887, was the 400th appearance of Śrī Caitanya. Thus, Bhaktivinoda first printed and published the Śrī Caitanyopaniṣat from the “Śrī Caitanya Yantra” press located at Bhakti Bhavan in Calcutta, together with his Sanskrit commentary and Paṇḍita Madhusūdana Dāsa's Bengali translation named 'Amṛta-bindu.' This translation of both the original verses. Sanskrit commentary, and Bengali rendition is based upon the original publication from 1887.