Salaah

Q: If one prays behind the imaam, and after the imaam has finished both taslims the congregation gives the taslim to both sides (this is the custom method in the masjid I am going thus I also follow this) If after the imaams both taslims, I do give taslim to the right side and then to the left side, but I do repeat the taslim to the left side (because of a doubt that I didn’t hear myself saying a small portion of the taslim). 

Did this break my salaat? Did I had to do sajdah sahw or what did I have to do? Is my salaat complete. I didn't repeat it, if I have to repeat it when must I repeat, is this after 5 salaat times are past away since the the order is waived and the salaats after the salaah which has to be repeated are then valid and no need to repeat those salaats also?

In such case is there a circumstance that the taslim to leftside is considered delayed and thus must be sajdah sahw? Or does it not so count since I did it because of a doubt ? In case that the first taslim I thought I had not heard a portion of it, was done correctly, does the addition of the repeating change anything, or is it not to be considered since I am then already out of salaah and nothing matters what I do say after the taslim to the leftside?

Q: If in a silent prayer, during recitation of Surah al Fatiha, how much of it is recited loudly would require sajdah sahw ? Is it correct that according to Abu Hanifa if 1 ayaat is recited loudly it will require sajdah sahw, but according to Imamayn it is 3 ayaat? If one recites ''ihdina's'' and ''liiiin'' loudly in salaah would this require sajdah sahw ? Also in the first two rakaats when Surah Fatiha and a additional surah are to be read, upto to how many recitation of it may be reacited loudly before sajdah sahw becomes due ?

Q: Referring to question linked below : http://muftionline.co.za/node/1902

If one had read salaah with his wife in jamaat (only two of them)  and had not explicitly stated the niyyat of leading women before starting salaah, but it was obviously intended since was just 2 of them, would the salaah be valid?

Q: Someone told me that it is a sin to fold the pants above the ankles before performing salaah, and it is better to let the pants hang below the ankles. He mentioned that there is a hadith of Rasulullah (sallallahu alaihi wasallam) that prohibits folding the garments in salaah. Is this correct?

Q: What it is to read hamdan kaseeran tayiban mubarakan fee after ruku. Is it sunnat?

Q: When I finished sajda of 3rd rakat for 1 second I was in the state of tasahud unintensionally instead of qayaam. Do I need to make sahu sajda as I was for 1 second in tasahud unintensionally?

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: I heard from some Ulama or some Book that, we need to pray only Fajr Sunnah Qazaa from all the sunnah mukaidaa and no need to perform any other sunnah-e-muqaidaa, kindly confirm is this correct.

Please explain me in detail why we need to perform qazaa salaah only for the Fajer Sunah and why we do not need to perform any other sunnah mukaidaa because Fajer Sunnah is also sunnate mukaidaa.

Q: A person can't even perform namaz in the tashahud position due to kidneys aches. So is it possible to perform namaz on a chair in the direction of qibla ? What is the appropriate manner in this case?

Q: I know that according to the Hanafi madhab to have a valid recitation one must hear oneselfs recitation. But what if there a surrounding noise, or during performance of salaah a surrounding noise (such as children talking etc) does start, does one still need to hear oneself ?

I came across to this statement of Nawawi but he is a Shafi scholar does the same count for the Hanafi madhab:

Al-Nawawi (may Allaah have mercy on him) said in al-Majmoo’ (3/256):  

The minimum form of reciting quietly is such that a person can hear himself if he is sound of hearing and there is no problem such as surrounding noise and the like. This is general in meaning and applies to recitation, takbeer, tasbeeh when bowing and so on, tashahhud, salaam and du’aa’, whether the prayer is obligatory or naafil; nothing of it counts unless he can hear himself, if he is sound of hearing and there is no problem. End quote. 

See: Tabyeen al-Haqaa’iq (1/127) and al-Bahr al-Raa’iq (1/356). 

Do the Hanafi scholars state the same since at the end two Hanafi books are mentioned i.e. Tabyin al Haqaiq and Bahr al Raiq ?