The concluding time for the night prayer, Isha, is a matter of some variation among Islamic legal schools. Generally, its permissibility extends until the break of dawn, marking the start of Fajr, the morning prayer. However, delaying the prayer until such a late hour is typically discouraged. The optimal or preferred endpoint for performing this obligatory act varies depending on the specific interpretation followed.
Understanding the permissible timeframe for the completion of Isha is important for Muslims to ensure adherence to the daily prayer schedule. Observing prayer times correctly is considered a fundamental aspect of Islamic practice. Historically, differing interpretations arose due to variations in geographical locations and the methods used to determine the appearance of dawn.