"[Exalting Him therein morning and evening] (Qur'an 24:36): 'Al-ghuduww' (morning) is the morning prayer (subh), and 'al-asal' (evening) refers to the later parts of the day: the noon (zuhr) and afternoon (asr) prayers. The sunset (maghrib) and evening (isha) prayers have been mentioned elsewhere in other verses, thus encompassing all five prayers.

Surah al-Nur (from verse 37 to verse 40)."