Method of Salaah

Q: I have a question that how can we make dua in sajdah? Should it be in the Salaah or directly in the sajdah or should it be in Salaah Al Maktoobah or voluntary Salaah?

Q:

1) On Friday mornings in Fajr Salaah (farz), the Imaams of the Musjid as well as the Musallis finds it difficult for surah-sajdah to be recited in the first rakaat, and then surah-dahr in the second. Therefore, by one Imaam (Zaid) spiltting up surah-sajdah in two rakaats on one Friday morning and then the other Imaam (Bakr) splitting up surah-dahr in two rakaats on the next Friday morning; will we still be fulfilling the Sunnah?

2) Is it Sunnah to recite Surah Jumuah on Friday mornings in Fajr Salaah? (farz)

3) Is it Sunnah to recite Surah A'laa and Surah Ghaashiyah on Friday mornings in Fajr Salaah? (Farz)

Q: A few years had passed where I used to recite Qirat and tasbeehaat in Salaah silently. Do I need to repeat all those Salaah? Most of my Salaah I performed was with jamaat. However, in that 8 year period I am not sure how many Salaah I performed individually. How would I calculate how many Salaah I need to redo in this instance?

Q: On page 194 beheshti zewar English, #4, it says, the spot on which sajdah will be made should not be more than half a metre higher than feet. However page 165 #7 mentions the same maslah but says one span is the distance. Is the correct distance one span or half a metre?

Q: I would like to ask, if I made one sajda only by mistake and forget the second one, is my prayer valid? I heard that the first sajda is fardh only and the other is mustahab.

Q: After the fard prayer, some imams make dua in congregation while some do not. Some people say it is bida to raise the hands after fard prayer in congregation. But according to a hadith I read, after fard prayer, it is one of the best time to make dua. So, according to Sunnah, what should be done after fard prayer?

Q: After fard prayer, do you have to send salutation on Muhammad (Sallallahu Alayhi Wasallam) by reading the durood shareef? Every masjid do that but when I am doing research, in no place it is mentioned that after fard prayer, you have to send blessings on Muhammad (Sallallahu Alayhi Wasallam) (i.e Allahumma swaliraswayyidinamuhammadinwwaralaalimuhammadinwwabaarikwasallim)? Or is it that they do this because they make the congregational dua after that because durood should be recited before making dua? According to my knowledge, after fard prayer, you have to read ayat ul kursi, tasbeen e fatihi and make your own dua and some but this recitation of durood is confusing.

Q: In jalsa between two sajdah, can we read dua allahummaghfirlee warhamnee in short?

Q: Can we start Surah Bakarah in the second rakaat when we recite Suraha Naas in the first rakaat?

Q: One recites a passage from the Quran as a Surah in salaat. However, after completion of the salaat, there is a lingering doubt in one's mind that the last ayaat was not recited correctly but cannot recall exactly what one recited. What then should one do?