Q: Is it preferable for the Imam to lengthen the Ruku' briefly when hearing someone entering the Masjid to join the Salaah?

Q: In the Ahaadith what are the virtues mentioned with regards to wearing a turban? Was it a perpetual Sunnah of Nabi (Sallallahu Alayhi Wasallam)? Will a person get seventy times more reward if he performs salaah with a turban?

Q: I visited a certain website, according to them hanafis can't pray behind Imams of the haramain if they don't take care of the masaail in wudu as hanafis do i.e they should do masah of head to more than quarter of the head, if they don't do we can't pray behind them. I think this is not good, at the time of Sahaba there would not have been such an issue as to not offer salah behind any specific sahabi. Please clarify.

Q: 

1. The qamees for the mayyit, please give me the proofs for it. It is mentioned in Saheeh Bukhari that there was no qamees in the kafan for Nabi Kareem (Sallallahu Alayhi Wasallam).
2. Abdullah ibn Umar once saw a shelter on a grave, and ordered it to remove it. He said that it is the good deeds of the person who put him away. (Saheeh Bukhari). Give me the page number. Please give me the references.

Q: I would like to know who does amir and ulul amr refer to in Quran and Ahaadith? Does it refer to amirul mumineen? If yes, then in our time upon whom will the title amir fit? Or can it refer to the principal of a madrasah, the teacher of a class, the sheikh of a khanqah, the leader of a tabligh jamaat, the leader of a jihad campaign etc.?

Q: Can you please comment on the permissibility of the 'Bibi Fatima Kahani'?

Q: Is the sister of my grandfather mahram to me?

Q: What is ruling of eating food items in which we have some doubt whether it contains halaal ingredients or not like Maggi noodles, etc?

Q: Can a brother and a sister sleep in the same room?

Q: I have heard that a person who reveals his satr to another person, his salah will not be accepted for 40 years. Is it true?