In plain words
Amutaṉār, to his heart: O my heart, so great in kindness, I bow at your feet, for this: you dried up the kinship I had with the base, demon-like by birth, and set me beneath the feet of those [such as Kūrattāzhvāṉ] whose fine fortune is to love Rāmānuja the sage, the teacher of matchless excellence, upright and one in thought, word and deed.