No, it does not.

if an Imam or some other person makes mistakes in reciting during salah; like س instead if ص or د instead of ض, does his salah gets invalid?

Prayer | July 3, 2017 7:05 pm
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In the past i was ignorant.I used to not to follow the imam, so maybe he is in sujud but I am in qiyam(reciting fatiha/other surah).I don’t remember in how many prayers, I did this. What should I do about them? Do I have to estimate and repeat them?
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I love to pray tahajjud prayers. Sometimes when I wake up I hear fajar azan. I not only missed tahajjud prayer, I also miss witr prayer. How can I cover up witr.