Q 1: Is it obligatory to
recite a short Surah or whatever one can recite of the Qur'an after Al-Fatihah in any two Rak'ahs of Al-Sunnah Al-Ratibah (supererogatory prayers that were stressed and regularly performed by the Prophet)
(e.g. Fajr, Zhuhr, Maghrib...Etc.)? Or is it enough for a person to only recite Al-Fatihah in the Sunnah?
It is permissible for a person to recite Al-Fatihah or some Ayahs of the Qur'an in Al-Nafilah (supererogatory Salah [prayer]), so as to follow the sunnah of the Prophet (peace be upon him) and act according to the authentic Hadiths mentioned in this regard, but if a person restricts themselves to reciting Al-Fatihah, their Salah will still be valid.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.