question #3 Sahih Muslim 727a, Book 6, Hadith 121 : What is the role of reciting Quranic verses in the practice of supererogatory prayers?

“Say: We believed in Allah and what was revealed to us…” verse 136 from Surah Baqara, and in the second of the two: “I believe in Allah and I bear testimony that we are Muslims” (iii. 52).