Prayer: The Time of the Nafilah of the Night
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 760
Based on the opinion held by most jurists (mashhūr), the commencement of the nāfilah of the night is midnight. Although this is accordant with recommended precaution and better, it is not far-fetched (baʿīd)[1] that its commencement be the start of the night and its time continue until the time of the morning call to prayer. It is better that the nāfilah of the night be performed near the time of the morning call to prayer.