we were commanded to recite Fatihat al-kitab and whatever was convenient (from the Quran during the prayer).
Sunan Abi Dawud Book 2, Hadith 428
← Previous Hadith As if I am hearing the voice of the prophet (may peace by upon him) who would recite at the morning prayer “Oh, but I call to witness the planets, the stars which rise and set”(surah 81:15-16)

Sunan Abi Dawud Book 2, Hadith 427 Next Hadith → Go out and announce in medina that prayer is not valid but the recitation of the Quran even though it might be fatihat al-kitab and something more.

Sunan Abi Dawud Book 2, Hadith 429