Jamaat Salaah and Imaamat

Q: If one prays in congregation, but due to people praying ahead, he cannot join the saffs ahead, is it permissible:

1. To pray behind an empty space between him and the safs ahead where more than two safs can be formed?

2. OR should he pass in front of musalles to go ahead? What about in the Haram Shareef in Makkah Mukarramah and Masjid Nabwi? Are we allowed to pass in front of musalles?

3. If one prayed behind with an empty space ahead, does the salah need to be repeated?

4. If needs to be repeated, if the prayed salah was janazah, what intention to make for the repeated salah, nafl as janazah salah perhaps cannot be repeated?

Q: If an imaam is a shafi and leads a hanafi community during the year in salaah. What should be done in Ramadan for salaah of witr. If he reads according to shafi mazhab, what happens to those that he is leading who are hanafi? Or should he lead the salaah according the hanafi mazhab?

Q: I caught Maghrib Salaah in the 1st tashahud and on completing salaah I realized that I have completed 4 tashahud in a 3 rakaah salaah. Was this correct? If not, do I need to make Qazaa?

Q: I have been offered by my uncle to perform taraweeh salaah with two cousins of mine at his house. His house is between a musjid and a jamaat khana and is 650m from both. I wanted to find out if we are performing taraweeh there, can we perform the esha salaah there as well or not? 

Q: I would like to know that when should we begin salaah with the imaam, after takbeer in namaz or before namaz. Can a person do itteba of imaam when he makes the niyat?

Q:

1. Is it permissible to pray behind an Imam who smokes?

2. Also, is it permissible to learn Quran from someone who smokes cigarettes?

Q: If due to rain in certain parts of the world, Maghrib and Isha’ are prayed together in the masjid. Would it be permissible for Hanafis to conduct a second congregational Isha’ prayer in that masjid, because it is forbidden to conduct second congregation prayer in a masjid?

Q: Some masaajid have a two-storey building. Is the reward for praying in the first row of the second floor equal to that of praying in the first row of the first floor?

Q: Suppose we are offering 4 rakaaat namaz as a muqtadi and we are in the 2nd rakat of prayer and as we know in the 2nd rakat we are suppose to say only "At-tahiyyaat" but mistakenly you also said Durood Ebrahim, then what should one do if he is offering the namaz as a muqtadi?

Q:

1. In Witr Salaah in the month of Ramadhan, if the masbooq joins the Imam in the ruku of the last rakat, is it wajib for the masbooq to recite dua e qunoot when he stands up to complete his missed rakat and in which rakat will he recite dua e qunoot?

2. In Witr Salaah, if the masbooq missed all the rakaats and did not recite dua e qunoot when he stood up to complete his Salaah, is it compulsory upon him to repeat the Witr Salaah after the Salaah time has expired?

3a. If the masbooq turned for salaam with the Imam accidentally or not knowing the masala and he did sajdah sahw at the end, is the Salaah valid?

3b. In the above situation, if he didn't do sajdah sahw, is it compulsory to repeat the Salaah when the Salaah time has expired or is the Salaah valid but incomplete?

4a. When the Imam did salaam to do sajdah sahw, the masbooq accidentally or not knowing the masala, he also turned his head for salaam and then did sajdah sahw at the end of the Salaah, is the Salaah valid?

4b. In the above situation, if he didn't do sajdah sahw, is it compulsory to repeat the Salaah when the Salaah time has expired or is the Salaah valid but incomplete?