pErE varap pidhaRRal allAl em pemmAnai
ArE aRivAr? adhu niRka - nErE
kadik kamalaththu uL irundhum kANgilAn kaNNan
adik kamalam thannai ayan

Meaning:

pidhaRRal allAl 		- Other than babbling
pEre 				- the divine names of
em pemmAnai 			- our Lord
vara 				- such that He comes,
ArE aRivAr 			- who can know Him?
adhu niRka 			- let that be;
nErE irundhum 			- despite being close to Him
kadi kamalaththu uL 		- within the fragrant lotus (in His navel),
ayan 				- Brahma
kAngilAn 			- does not know
kaNNan 				- the Lord's
adi kamalam thannai 		- divine lotus feet.

Vyakhyana Saram:
Other than saying His divine names in improper fashion that matches our knowledge (or the lack thereof), who can measure His greatness says Azhvar.