Surah 50. Qaf, Ayah 39

Sc., "regarding the alleged 'impossibility' of resurrection".

I.e., "remember His almightiness at all times of day".

Allah should be remembered at all times. But the best time for individual adoration is early in the morning before sunrise, late in the day before sunset, and a portion of the night, when there is stillness in the air, and man's spirit loves to commune with things spiritual. Those who would connect this with the five canonical prayers, instituted at a later stage in Madinah, would take the Fajr for the prayer before sunrise, the Zuhr and, the Asr for the afternoon prayers before sunset and the Magrib and the Ishaa for the night prayers.