Qa’dah and Salaam

Q: What is the correct way of reciting solatul-ibrahim?

Q: Should we recite At-tahiyat and Durood e Ibrahim with Tajweed? With Ghunna and everything?

Q: I have come across a Hadith narrated by Wail ibn Hujr (Radhiyallahu Anhu) on the description of the prophetic prayer in Abu Dawood, and there I found that we should raise the index finger from the starting of tashahud to the end of salah and we should slightly move (shivering/vibrating it in an infinitesimally small distance) but the people of my community raise their finger only while saying ash hadu an la I laha... (I know both of it can be done, but I would like to prefer the authenticity one) and so I did it up to now! Hanafi/Shafi school do it I think so, but could you please tell me what to do now.

Q: A person was performing a four rakaat fardh salaah. After performing the fourth rakaat, he did not sit for the qa'dah, but forgetfully stood up for the fifth rakaat. He then made ruku and sajdah in the fifth rakaat, sat for tashahhud and made salaam.

What is the status of his salaah? Is his fardh salaah valid or does he have to repeat his salaah?

Q: While sitting in attahiyyat, if I lift my hand from my thigh, does this affect my prayer?

Q:

1. When we read durood in namaz or in general we say Muhammad, so do we have to say sallallahu alaihi wasallam 4 times?

2. What are the rewards of just saying sallallahu alaihi wasallam, like how durood has its rewards? 

Q:

1. Can one read multiple duas that come from the hadith after tashahud and before tasleem?

2. Can one read one dua multiple times after tashahud and before tasleem like: Bismillahi ala dini wa nafsi wa waladi wa ahli wa mali Or Allah humu ini aoothbika minal mathami wal magram?

Q: In namaaz, after reciting the dua after durood, Rabbi inni zalamtu..., can we recite other dua's before salam? 

Q: What is the ruling on raising one's finger during tashahhud?

Q: Is it permissible to recite Surah Fatiha at the time of tashahhud if you don’t know what to say.