Salaah

Reciting Surah Faatihah instead of atthiyyaat in salaah

Q: I was reciting Surah Faatihah in place of Attahiyyaat. I realized at the time when I was going to lift my index finger. I stopped Surah Faatihah then recited Attahiyyaat and ending with sajdah sahw or I completed Surah Faatihah and ending with Salaam only. Will my salaah be valid? If not, kindly inform me as how do I correct such an error in salaah?

Women's rukoo

Q: I was bowing in ruku and usually I tend to bend my knees slightly when doing so because apparently that is how a woman’s salah is supposed to be according to Hanafi mazhab. My hands are usually clasped around my knees. I suddenly remembered that I read that women aren't supposed to clasp their hands over their knees and was going to move them. I believe I intended on moving my body and arms a little up so the tips of my fingers would reach the top of my knees. I ended up not really moving much I think - I only moved my hands a little up I think.

1. Is my salah fine?

2. Would my salah have been invalidated if I moved my arms and body up too?

Omitting Surah Faatihah in the third or fourth rakaat

Q:

1. During the fardh salaah of Zohr, Asr, Maghrib and Isha, can the imam omit Surah Fatiha in the 3rd/4th rakat (when there is time constraints)? Stand for 3 subhanallahs before going in ruku.

2. Also, when one is performing Salah individually can one omit for the same reasons?

3. What is the status of Surah Fatiha in 3rd and 4th rakaat? i.e. Fardh, wajib, mustahab etc.

4. Is there any hadeeth to support?