Its name stems from a legend, according to which, the fight of Gaja (elephant)–Graah (crocodile), is the reason behind people asking - kaun haara.
The fight is an emblem for the city, and is prominently depicted on the Hajipur railway station's dome, entry point of Sonepur fair and other notable places.
Since Ganga flows from the west and Gandak from the north, they meet at a right angle (Hindi: konhara).
Spoken Hindi later evolved and the word changed from Kon to Kaun and Dhara to Hara.
[3] One morning, when he entered the river for bath, the crocodile grabbed his leg, beginning a long fight.