Salaah

Q: I am 30 years old. I started offering Salaah on time at time. I want to make qadha for the past 23 years. How can I offer qadha of those Salaah?

Q: If a person is performing salaah and needs to check the time so as not to miss Takbir-e-oola.

1) Can he look at his wrist watch which may involve him having to move his kurtha and tilt his wrist in qiyaam?

2) If it is dark would it be permissible to press the light button with the other hand as well?

Q: I know if a person's phone rings on loud during salaah, it is permissible to use one hand and switch the ringer off. If the phone rang very loud, and the person expects that it will ring again, someone mentioned that it will be permissible with one hand to take the phone slightly out the pocket, and look at the screen and press a couple things to switch it off (because today's phones can't be switched off without looking). Is this permissible?

Q: Can dua be made in Sujood after having prayed the fardh Salaah?

Q: If we offer nafil salaah sitting, then is there extra sawaab in it?

Q: Can a person sitting on the floor lead the salaah with jamaat? What about if sitting on a chair?

Q: If a person is performing nafil salah and his watch beeps to say zawaal time has come in, should he finish the salaah as soon as possible or should he break the salaah?

Q: After ruku I used to say sami Allah huliman hamida (without ha in the end) and no Ayn at Allah, will this make my salah invalid?

Q: I am a diabetic. I feel pain in my legs and knee joints very often. Although I am not very old and I can walk easily, but I find it difficult to move up and down during salaah. My question is that if I offer salaah in the sitting position whenever I feel pain, would it be valid?

Q:

1) How many minutes before and after the zawaal time is salaah not allowed?

2) If a person is performing salaah and zawaal time comes in, what happens?

3) If a person in the masjid is unknowingly performing salaah through zawaal time what should be done?