Here is your short paragraph on Vyasa Puja:
Vyasa puja is celebrated in the month of Adi (July-August) on the full-moon day by the asceties.
In Tamil Nadu this is observed primarily for the general welfare of the world by securing the blessings of Vyasa.
This puja is conducted at Kanchipuram every year as Adi Sankara and also is Kumbakonam, the centres of Sankaracharya who is considered as Vyasa himself.
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The ritual goes like this ‘Rice is spread on a piece of new cloth and over this rice are place lime fruits to draw the presence of Adi Sankara and his four disciples.
After the puja is over, the rice is distributed to masses to be taken home and mixed with the stock kept there.