Salaah

Q: Is it permissible to make qadhaa after asr or is it preferable to make the qadha before asr?

Also, is it permissible to make qadha salah before or after maghrib ?

Q: What is the maximum amount of rakaats one can perform in tahajjud with making salaam in the end? I heard that the most is eight rakaats, but can a person perform more than eight rakaats with making salaam at the end?

Q: As you are aware, in Gulf countries, in the Masjid after the main congregation is over, there are many second and third small congregation/jamaat prayers going on in the masjid with 5 people or 6 people or 10 people ,and so forth. As far as I know, in Hanafi Fiqh, it is not considered okay to make second jamaat in the masjid. As a Hanafi, what should a tourist visiting a Gulf country or a resident of a Gulf country do if he misses the main congregation and he sees the second smaller congregations of a handful people going on? Should he join it or should he pray the fardh separately?

Q: As the Asr prayer for the Ahnaaf starts after Mithle-Thaani, in Gulf countries it starts at Mithle-Awwal and the jamaat of Asr in the Masjid is made whilst the Dhuhr time of Ahnaaf is still going on and since in each and every part of the Gulf the asr jamaat is at earlier times, what should a person do? Should he join the jamaat or should he pray alone for Asr prayer? 

Q: Please explain the manner of Rasulullah (sallallahu alaihi wasallam)'s tahajjud and the duas he would recite upon awakening for tahajjud.

Q: When I perform my Tahajjud prayer, I have a pain in my head and my brain stops working properly.

During Tahajjud prayer I feel that something is shaking in my head. Please give a solution for this.

Q: Can Dua-e-istikhaara be performed for trivial decisions, or should it be reserved for major life choices?

Q: If you happen to pray behind an imaam without a beard or with a trimmed beard, the jamaat prayer will be beneficial. But the prayer is not fulfilled. So I heared for a bayaan that you pray the prayer personally.

This needs clarification. Because the imam who prays in our masjid has a habit of cutting his beard.

Q: If there are a few musjids in an area, which musjid will be the best to perform salaah in? The oldest musjid or the musjid with the most musallis?

Q: Should a Muslim girl call out the azaan in low voice?