Kindly refer to the following link(s):
https://www.youtube.com/watch?v=MtQ-7cH5HoU&t=10s

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.

Prayer | July 3, 2017 7:07 pm
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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?
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As the Dua after Fard Salah is very important. Imam offers salam after a short dua with Darood Ibrahim. What should we do with our dua’s because of this short duration. As we learned from sunnah of making dua before salam & do dhikar after salah.