Does one become an infidel if air is emitted from him and he completes his prayer?

The prayer becomes invalid by the emission of wind during it, and it must be interrupted and repeated. Whoever completes the prayer intentionally while in a state of minor ritual impurity (حدث) has committed a great sin, but he does not become an infidel (كافر) by that unless he deems the act permissible. Some scholars, like Abu Hanifa, believe that he becomes an infidel due to mockery.