Light is not an essential condition or an obligatory part of the prayer. But if the darkness is a cause of fear which disturbs you, then it is disliked for you to pray in the dark.

The 5 daily prayers in the Quran are referenced indirectly through multiple verses. Ibn `Abbas explained that “when you come up to the evening” refers to Maghrib and `Isha, “when you enter the morning” is Fajr, “in the afternoon” is `Asr, and “when the day begins to decline” is Dhuhr. These general time indicators are clarified in the Sunnah for precise implementation.