Dhammapada Verses 11 and 12
The Story of Thera Sariputta
Upatissa and Kolita were two youths from Upatissa and Kolita, two villages near Rajagaha. While looking at a show they realized the insubstantiality of things and they decided to search for the way to liberation. First, they approached Sanjaya. the wandering ascetic at Rajagaha, but they were not satisfied with his teachings. So they went all over Jambudipa and came back to their native place, after searching for, but not finding the true dhamma. At this point they came to an understanding that one who found the true dhamma should inform the other.