(তুমি নির্মল করো) is a widely sung Bengali praise and worship song. The title translates to "You Make Me Pure" or "You Cleanse Me" . It is a prayer for spiritual cleansing, renewal, and holiness, often sung in church services, prayer meetings, and Christian gatherings in Bangladesh and West Bengal, India.

Written in the late 19th or early 20th century, the hymn reflects Sen’s personal struggles and his surrender to a higher power. It moves beyond religious boundaries, focusing on universal themes of humility and the desire to be a "flawless lamp" (nirmolo prodip) to better serve humanity and the creator. Musical Composition and Chords