Pot

As part of His creation and re-creation process Lord Vishnu, at the end of the Tretha yugam asked Brahma to make a pot and put the quintessential and the eternal Vedas and sastras into it and carry them forward to the next yuga.    

1. kudavasal indicates mouth of the pot, 
2. kumbakonam the angle and 
3. thirucherai the content  

http://en.wikipedia.org/wiki/Kudavasal
https://www.youtube.com/results?search_query=Kudavasal 

http://mbakon.blogspot.com/

http://8div.blogspot.com/2015/05/pancha-sara-kshetram.html