In plain words
Amutaṉār: Rāmānuja is the holy one, who makes pure those joined to him; he praises the radiant Lord who with one sharp axe destroyed the kings of royal birth three times seven times over [as Paraśurāma], and his fame has spread all over the world. Now that I have come to him, my speech will not speak of anything else, and my mind will not think of anything else, from now on.