Salaah

Performing salaah behind imaams who shave their beards or wear their pants below the ankles

Q: I am living in Canada and perform salaah in a masjid or musalla where sometimes the salah is led by an Imam whose pants are below his ankle or someone has no beard and I don’t have any other choice. This happened once in a while. Do I have to repeat that salah after the jamaat or will it be okay? If I have to repeat the salah then I can repeat it in the future if this one happens but what about the past salah that I don’t know how many it was.

Feeling laughter in one's chest when performing salaah

Q: The problem I face throughout the prayer is that I feel laughter in my chest. I think it comes from fear of breaking prayer due to laughter. There are times when I compulsively (quite intentionally) pronounce letters, especially "haa", mixed with laughter and sometimes, by forgetfulness.

Most of the time, voice cracks continously while reciting and very little part of my voice is audible (due to uncleared throat) and feelings of laughter seem to get mixed. Can you please let me know what is the type of laughter that breaks Namaz? I keep feeling every Namaz is invalid.