Sajda-e-Sahw

Q: If the Imaam prays Surah Fatiha silently in jahri salaat, would sajda-e-sahw be wajib? If only two verses or three verses are recited what will be the Hukm?

Q: It sometimes happens that while offering four rakaats namaz, I get confused whether I am in the third or fourth rakaat, so I either pray the whole namaz again or conclude that I am offering the third rakaat and offer one more rakaat, do sajdah-e-ahw and finish my namaaz. I want to know if I get confused regarding the rakaat, then what has to be done?

Q: If a person misses sajdah-e-tilaawah while performing salaah e.g. he was reciting a surah which had a verse of sajdah, but he did not remember to perform the sajdah, is he required to repeat the salaah? 

Q: If a masbooq makes both salaam after the salaah concluded, will sajdah sawh suffice or will the person have to repeat the salaah?

Q: My question is regarding sajdah-e-tilaawah during salaah. If I mistakenly performed two sajdahs instead of one, what should I do?

Q:

1. If the Imaam in taraweeh salaah mistakenly sits down for tashahhud after one rakaat, thinking it to be the second rakaat. After sitting down, he immediately realized and stood up for the second rakaat. In such a case, will he have to make sajdah sahw?

2. And what about if this happens in farz Salaah?

Q: How should one perform sajda-e-sahw? Please explain to me the process of how to offer it.

Q: I have a number of confusions about Salaah and will be grateful for clarification.

1. If one recites Surah Fatiha in part but fears a mistake or miss pronunciation and recites it again from the start, will sajdah-e-sahw become waajib? If yes, what portion of Fatiha repetition will invoke it?

2. Sitting in tashahud position, if I am tired and my hands roll beyond the thighs with fingers running over my knees, how bad is this?

3. In summer, I have a habit of folding up my shirt sleeves well above the wrists and trousers well above the ankles and perform my Salah in the same state. I am told that this is forbidden, how bad is it if one folds one's garments up in Salah? If my lower garment reaches my ankles, (men's ankles should be exposed) is tucking trousers up at waste or folding at the bottom, still forbidden? I live in a cold country, We don't get garments made these days, we buy clothes ready made, whatever we get and sometime these are a little oversize, out of difficulty and not arrogance. How can one reconcile?

Q:

1) A person thought of a sajdah Ayat in his head without reciting it with his lips. Does sajdah-e-tilaawat become wajib?

2) A person mistakenly made a sajdah-e-tilaawat in salaah at the wrong aayat of Quran. Does sajda-e-sahw become wajib?

Q: If I say assalamu aleika isntead of wassalamu aleika ayyuhan nabiyyu in my tashahud, so AS instead of WAS.. are my all salahs valid or to be repeated? If during salah I realise I did this mistake again should I make sajda-sawh?