Witr and Nawaafil

Q: I have a question that in the nusus of quran and sunnah what is the number of rakats (most authentic) in Taraweeh?

Q: What is the status of performing isha as a jamaat While tarweeh is going on in a small musallah and an obvious disturbance for the imaam of Taraweeh takes place? Will it be correct to prevent the isha jamaat?

Q: Two hafezs are to perform taraweeh. One cannot make sujdah due to injury. knees cannot fold. some say he can perfrom taraweeh, some say no due to him not being able to do a sajdah. I would really appreciate clarity on this matter.

Q: In Arabian countries "Dua" will be recited by the Imam in gathering by lifting hands after "Dua-e-Qunoot" (before going for ruku') in "Waib-ul- witar" Prayer during Ramzan, in particular and before going for Rukuh of third Rakahat of Maghrib Prayer in general and why this procedure is not practiced in India, Kindly enlighten this.

Q: Could one defer praying the sunnah salah if one prays the fard on time. This could be due to shortage of time at work in non muslim countries.

Q: Is it permissible to pray Salaatul Hajaat on behalf of another person and pray to Allah to ease his difficulties?

Q: I am the mukabbir for taraweeh salaah,is this ok?

Q: If one started to perform tahajud salaah, suddenly he remembered he was impure. Does one need to make kazaa for the same?

Q: During weekdays, I perform Zuhar and Asr on the staircase in the office. So, there is not much convenience and hence I miss out zuhur sunnah salaah on a regular basis. And also I perform Zuhr about one hour before Asr time, so that I do not have to do wudu twice. Please advise.

Q: The Mukrooh time for Asr Salaah sets in when the sun looses its glare and one is able to gaze directly at the sun without any hurt to the eye. If this is correct, then will it be correct to apply the opposite  in order to establish the time of Ishraaq? I.e. After sunrise, as long as one is able to look directly at the sun the time of Ishraaq has not yet set in. However, once one is not able to look directly at the sun, can it be said that the time of Ishraaq has set in? Generally we are told that Ishraaq can be made 10-15 minutes after the time of sunrise. However, in some places it has been noticed that after 5-7 minutes (from the time of sunrise stated on the calender) the sun becomes bright enough that one is not able to gaze directly at it. Furthmore, what is the easiest way to determine the time of Ishraaq when the time of sunrise is not known?