Visarjan

According to the religious texts, according to religious texts, Shri Ganesh Chaturthi had narrated the Mahabharata story of Shri Ganesh for 10 consecutive days, which was written by Shri Ganesha literally. After 10 days, when Ved Vyas ji opened his eyes, he found that after ten days of untiring hard work, the temperature of Ganesha has increased very much. Immediately, Ved Vyas ji took Ganesh Ji to a nearby lake and washed it with cold water. Therefore, Chaturdashi is set up to make Ganeshas soft.

https://www.youtube.com/results?search_query=ganesh+visarjan
http://ganeshway.blogspot.com/search/label/Chaturthi

Parashara - Father of Vyasa

http://en.wikipedia.org/wiki/Parashara
Tube
https://www.youtube.com/results?search_query=Parashara
Festival
http://www.revatisurya.com/himachal/photogallery/pom/04-pom-june2009.html

1. Maitreya, 
2. Veda Vyasa (the author of Mahabharata, Bhagavata and classifier of Veda) and 
3. Sandipani (The childhood teacher of Lord Krishna) 

are the chief disciples of the the World Teacher, Parasara