In the first and second rakʿahs of the daily obligatory prayers, one must recite Sūrat al-Ḥamd followed by another surah; and based on obligatory precaution, [the second surah] must be a complete surah. Also based on obligatory precaution, ‘Sūrat al-Ḍuḥā’ and ‘Sūrat al-Sharḥ’, and similarly ‘Sūrat al-Fīl’ and ‘Sūrah Quraysh’, are counted as one surah in prayers.