The best time to ask Allah is during Tahajjud, when the whole world is asleep, and only the sincere hearts are awake. Tahajjud is the prayer of the sincere, the solace of the believer, and the delight of the soul. In the stillness of the night, when the world is hushed, and the darkness is illuminated only by the light of faith, that is when the believer finds true peace in Tahajjud.