Qa’dah and Salaam

Q: Can a person add Sayyiduna when reciting Durood Ebrahim in Salaah?

Q: In the final sitting if one says: اللهم صل على محمد وآله وصحبه وسلم, is the prayer valid?

Q: My right toe hurts while walking because of sitting in prayer with toe facing the qiblah, what should I do?

Q: Should a muqtadi make salaam after the Imaam has completed both sides salaam or should he make salaam afer the Imaam turns his head towards the right and then after the Imaam turns his head to left the we follow the Imaam, as we normally do?

Some people in Saudia told me that I should wait until the Imaam is done with salam on both sides then make salaam. Which method is correct?

Q: Should a follower in salaah make salaam:

1. Simultaneously with the imaam

2. After the imaam (such that he waits for the imaam to complete his right salaam and thereafter does his own right salaam, then waits for the imaam to complete his left salaam and then does his own left salaam)

3. Do the right salaam after the imaam but the left salaam simultaneously with him

Sometimes an imaam has completed his head movement but is still stretching the words of the salaam. If we are to do our salaam after the imaam's, should we do it as soon as he has completed his head movement or should we wait until he has also completed uttering the words?

Q: While reciting tashahhud, when one says Rasooluhu, instead of this if one says it as Rasooluh, does this constitutes as adding words to the Quraan if the person saying this knows that its Rasooloohu. In arabic is it changing A with O sound like 'zabar' and 'paish' difference?

Q: If during the recitation of Durood-e-Ebrahim, someone mistakenly says "majit" instead of "majid", does it invalidate his prayer?

Q: How many times is it prescribed to send blessings to the Holy Prophet Muhammad (sallallahu alaihi wasallam) in a salat and when?

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?