Method of Salaah

Dua to be recited in jalsa

Q: Is there any dua to be read between two sujoods? I have never heard of saying any dua between two sujoods. If someone does not say any dua between two sujoods, does he need to make sajda-e-sahw? I recently heard that one should say " Rabig-Firli" between two sajoods and if someone does not say then he has to make sajda-e-sahw. Is it correct?

Reciting in sequence in Salaah

Q:

1. When reading surahs in our Salaah is there a specific sequence to choose a surah to read? e.g. Do we have to start from Wadduha then followed by the next surah?

2. Is it ok to read a short Surah followed by a longer one? e.g. Wal Asr and then Izaajaa'a. Please explain what is the correct way?