Indian Penal Code, 1860
151.
Knowingly joining or continuing in assembly of five or more persons after it
has been commanded to disperse
Whoever knowingly
joins or continues in any assembly of five or more persons likely to cause a
disturbance of the public peace, after such assembly has been lawfully
commanded to disperse, shall be punished with imprisonment of either
description for a term which may extend to six months, or with fine, or with
both.
Explanation- If the assembly is an unlawful assembly within the meaning
of section 141, the offender will be punishable under section 145.