The great verse of surrender — offering everything done by body, speech, mind, senses or nature itself to Narayana. Traditionally recited at the close of worship or any work.
As the concluding samarpan: after the aarti and offerings, the worshipper recites it to dedicate the entire puja — including any errors or omissions — to the Lord.
Source: Srimad Bhagavata 11.2.36. Regional versions may vary — this text follows the version most widely used in community worship.