Mississippi Code Title 97. Crimes § 97-3-17

(a) When committed by accident and misfortune in doing any lawful act by lawful means, with usual and ordinary caution, and without any unlawful intent;

(b) When committed by accident and misfortune, in the heat of passion, upon any sudden and sufficient provocation;

(c) When committed upon any sudden combat, without undue advantage being taken, and without any dangerous weapon being used, and not done in a cruel or unusual manner.