ei sloka kahiyachena radha-thakurani
tanra krpaya sphuriyache madhavendra-vani
ei—this; sloka—verse; kahiyachena—has spoken; radha-thakurani—Srimati Radharani; tanra—Her; krpaya—by the mercy; sphuriyache—has manifested; madhavendra—of Madhavendra Puri; vani—the words.
Actually this verse was spoken by Srimati Radharani Herself, and by Her mercy only was it manifest in the words of Madhavendra Puri.
Link to this page: https://prabhupadabooks.com/cc/madhya/4/194