The chief judicial magistrate in Muzaffarpur, about 70 km from here, accepted the complaint filed by advocate Sudhir Ojha.
Ohja sought to book Digvijay Singh for sedition, provoking so as to cause riot and causing insult.
Ojha said the court will hear the case June 16.
“Millions of followers of Baba Ramdev were hurt by Digvijay Singh’s bad language,” the petitioner said.
The Congress leader Sunday called Ramdev a thug after the midnight police action that led to Ramdev’s expulsion from Delhi.