Sutra:
111. *anRu nAn piRanthilEn piRanthapin maRanthilEn* ennA ninRArkaLiRE.

Meaning:
Having got the knowledge of the Lord they stand without forgetting Him as per Thirumazhisai Azhvar's "anRu nAn piRanthilEn piRantha pin maRanthilEn".

Sri PBA Swami's Sarartha Deepikai:
Also, as told by Thirumazhisai Azhvar (Thiruccantha Viruththam 64) "anRu nAn piRanthilEn piRantha pin maRanthilEn", for those who are born into the knowledge of the Lord, there is no chance whatsoever of forgetting it.

By this thus far, it is shown that for those who have understood the divine qualities and the indescribable greatness of the Lord, the prayer to perform service will happen without any stop.