Salaah

Nafil Salaah in jamaat

Q: Qiyaam-ul-layl: I am a Hanafi  living in an area where, unfortunately, many do not follow a set mazhab. One of the brothers requested that 'Qiyaam-ul-layl' be performed in jamaat during Ramadaan. From his description, I understand this to be tahajjud salaah (as we have already
arranged for Taraweeh salaah). Is it permissible to perform any nafl salaah in jamaat?

Repeating Surah Faatiha in Salaah

Q: One read more than the half of surah al Fatiha in the 1st rakah, then doubts whether he recited the beginning part correctly. If he re-starts from the place he doubts (and thus repeats a half or more of the whole surah) does he need to do Sajdah Sahw? Thus does repeating a half or more due to a doubt whether one recited correctly or not necessitate sajdah sahw, or does sajdah sahw become waajib only if one forgetfully repeats a half or more?

Ijtimai Du'a and naseehat after Salaah

Q: After the Fardh Salah the Imam makes Du'a in which many if not the majority of people participate, arguably making it an Ijtimai Du'a. Thereafter, the Imam stands up and gives naseehat to the assembled congregation, thereby delaying the Sunnah prayer. From the end of Salah to the end of the naseehat is between 4-5min. It may be contended that nobody is obligated to sit for the naseehat. However when the majority, if not all the people sit for the nassehat, it makes it
awkward for one or a few individuals to depart to perform their Sunnah as:

(a) People are in the way and get inconvenienced.

(b) Persons draw uncomfortable attention to themselves by getting up and leaving.

Is delaying the Sunnah for this duration or at all permissible?

If not, what is the proof that such a delay is impermissible?