pAraLavum Oradi vaiththu Oradiyum pAruduththa
nIraLavum sella nimirndhadhE - sUruruvin
pEyaLavu kaNda perumAn! aRigilEn
nIyaLavu kaNda neRi

Meaning:

Oradi 				- One unparalled divine foot
pAr aLavum vaiththu 		- covered the whole world;
Or adiyum 			- the other divine foot
nimirndhadhE 			- arose and
sella 				- went
nIr Alavum 			- up to the AvaraNa waters
pAr uduththa 			- that surround the world.
perumAn 			- O Lord!
aLavu kaNda 			- who saw the end of life for
pEy 				- Puthana
sUr uruvin 			- who came in the form of a divine damsel;
arigilEn 			- I cannot measure or understand
nI aLavu kaNda neRi 		- the actions that You have performed.

Vyakhyana Saram:
In the previous pasuram, Azhvar talked about His act of measuring the worlds. He gets caught in that great act, tries to experience it, and unable to experience it fully keeps talking about it in this pasuram.