Qiraat in Salaah

Reciting from different surahs in salaah

Q: In one musjid, the Imam Saheb read in the first rakaat of Fajr Salaah from the middle of Surah Tahreem,

يا أيها الذين آمنوا قوا أنفسكم و اهليكم

till the end of the Surah. Then in the second rakaat he read a different surah. Is there any reason for doing so? Would it not be better to start at the beginning of the Surah, read 2 pages, then in the second rakaat finish off the Surah?

Qiraat in salaah

Q:

1. What is the status of reciting consecutive Surahs in fardh salaat? For example, reciting Surah Ikhlaas in the first rakaat and Surah Falaq in the second rakaat?

2. In fardh salaah, it makrooh to intentionally recite Surah Ikhlaas in the first rakaat and Surah Naas in the second rakaat?

3. In Witr salaah, what is the status of reciting Surah Ikhlaas in the first rakaat, Surah Falaq in the second rakaat, and Surah Naas in the third rakaat?

4. What are the two shortest Surahs that can be read in the first and second rakaat of fardh salaah?