Article 261 Revised Penal Code
Article 261 of the Revised Penal Code is about Challenging to a duel. It is under Chapter One (Destruction Of Life) of Title Eight (Crimes Against Persons) of the Code.
Challenging to a duel
The penalty of prision correccional in its minimum period shall be imposed upon any person who shall challenge another, or incite another to give or accept a challenge to a duel, or shall scoff at or decry another publicly for having refused to accept a challenge to fight a duel.
See also: Article 260 Revised Penal Code