At a wedding feast, must guests give charity to a poor person who arrives asking, despite the rule that one engaged in a mitzvah is exempt from another?

This source-based Torah study examines: At a wedding feast, must guests give charity to a poor person who arrives asking, despite the rule that one engaged in a mitzvah is exempt from another? It follows the canonical Hebrew discussion and the classical sources cited there, preserving the distinctions and review status of the original. This localized layer is for study and discovery only; it is not practical halakhic, medical, legal, scientific, safety or pastoral advice.