Tahajjud
The Night Vigil Prayer
Allah Most High said, ‘Establish worship at the going down of the sun until the dark of the night, and (the recital of) the Quran at dawn. Lo! (the recital of) the Quran at dawn is ever witnessed. And some part of the night awake for its recital, as voluntary worship for you. It may be that your Lord will raise you to a praised estate.’ [Quran, 17: 78-79]
Abu Hurayra (Allah be pleased with him) reports that the Messenger of Allah (blessings and peace be upon him, his family, and companions) said ‘The best prayer after the obligatory prayers is the night prayer.'[Muslim]
Abu Hurayra (Allah be pleased with him) reports that the Messenger of Allah (blessings and peace be upon him, his family, and companions) was asked, ‘What prayer is most virtuous, after the obligatory prayers?’ He said, ‘Prayer in the depths of the night.’ [Muslim, Abu Dawud, Tirmidhi, Nasai, Ibn Majah]