Salaah

Q:

1. Is it imperative to read diff rent surats each day in the five salaats? Would salaat be valid if one continuously recites the same surats only.  For example, in the Maghrib salaat each day, one habitually recites sura Falaq in the first rakaat and sura Naas in the second rakaat. 
2. Can Ayatul Kursi be recited in place of a sura in salaat or is it necessary to add at least two ayaats before or after ayaatul Kursi?

Q: If a person makes a sajdah on a warm hat which overlaps onto his forehead, will this be correct?

Q: Is it Sunnah to sit and read the last two nafl rakaats of esha?

Q: Is it permissible for the female Muslim to be perfumed (be'd with alcohol or not) or to have lipstick while performing namaz and reciting quran?

Q: After the Esha Salaah, when the musallees had already performed their witr salaah, the Imaam made an announcement that the salaah had to be repeated as he did not have wudhu.

1. Should the 2 sunnah and witr salaah also be repeated again?

2. If nafl salaah was performed, should that also be repeated?

Q: Reading salaat behind Imam in jamaat, in the last two rakaat what should one recite, according to Shafii Maslak?

Q: In Salaah in Jamaat, when pulling a person back from the front saff to join him in the back saff so he doesn't read Salaah alone in the saff: 

1. Does he pull the person from the middle of the saff or from the side of the saff?
2. How will the front saff get completed again? 
3. If a third person then came and joined the second saff, can any one of them move into the front saff if that space is still open?

Q: Can a person read any nafl or qaada when tahajud time end before the fajr azaan.

Q: My question relates to the times of Tahajud. When i was in madressah I was taught that we could read from just after 12am till about 15min before fajar salah. Recently I was told many different things regarding the times. What would be the right time to read Tahajud salah and the cut off time?

Q: What is the time of Zuhr Salaah?