Sutra:
153. "caraNau sharaNam" engaiyAlE upAyAntharavyAvruththamAna upAyamengiRadhu.

Meaning:
Since the divine feet which is the goal is also shown as the means, it is said that it is different from those things in which the means and the goal are different.

Sri PBA Swami's Sarartha Deepikai:
As the thing which is the goal is also shown to be the same as the means, it is said that this means is different from other means where the way and the goal are different.