If a person laughs or smiles during the prayer, is it obligatory for him to repeat the prayer, or is it permissible to complete it?

Question:
May Allah reward you with good and do you good. What is the ruling if a person laughs or smiles during the prayer? Is it obligatory for him to repeat the prayer or break it off? Or is it permissible to complete it? May Allah reward you with good.

Answer:
It is obligatory in the prayer to be humble, to have presence of heart, to fear Allah (Glorified and Exalted is He), to desire what is with Him, and to revere and magnify Allah (Exalted and Majestic is He), because the worshipper is standing before Him. Therefore, it is not fitting for the one praying to laugh, because this indicates his heedlessness regarding his prayer and indicates a lack of humility or the absence of humility. As for its effect on the prayer, if it is merely a smile, it does not harm; that is, it does not affect the prayer. But if it involves loud laughter, it invalidates the prayer. Yes.