बेयो गोजामसिन मानोना बिरातनगरनि राजखुंथायाव बेनि आसार-खानथिफोरआ जोबोर सिगां-समनि, जाय खृ.गि. 1500 फ्रामाव जौगाखांदोंमोन।
It is the oldest because its customs date far back to the kingdoms of Viratnagar, which flourished around 1500 B.C.