ANSWER:

Yes, but without praying witr again. 

If i already prayed witr and woke up in the middle of the night. Can i pray tahajjud?

Prayer | August 29, 2019 9:08 am
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If i want to perform witr late night at the time of tahjjud..then how many rakaats i have to perform in isha?
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Sheikh, the muazein in my masjid reserve places by putting objects and saying people to move away, for people he know that come to pray in the first row regularly.. Is it correct or wrong? If it’s wrong then how can I stop this thing.. By advising him???