I know that during salaat if a person laughs out loud then not only his salaat breaks (becomes invalid) but also his wazu is broken, my question is if a person laughs in such a way that he does not make a noise while laughing and does not even open his mouth and does not show his teeth but while doing so his stomach is shaking , in this case while his stomach is shaking because he is trying to control his laughter does the salaat and the wazu breaks.
If someone smiles during namaz (prayer) it does not break or ruin his/her prayer. But if someone laughs then the prayer is broken. If someone laughs out loud and then along with the prayer the wudu is also broken. It seems from the question that you have asked that you are referring to only smiling because you are referring to your stomach moving. Apparently if this is the case then your prayer is broken but wudu is not broken.
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