What is the authenticity of the Hadith "There is no prayer after Witr," and does it refer to obligatory prayers? How can one perform night prayers after Witr if the Hadith is authentic? And what should someone do who did not pray Witr hoping to perform it later at night but did not wake up until the dawn (Fajr) adhan?

There is no Hadith with the wording "no prayer after Witr." Prayer after Witr is of two types: if it is a make-up for a missed prayer or has a reason, such as Tahiyyat al-Masjid (greeting the mosque prayer), then there is no harm in it. The other type is absolute supererogatory prayer, which has two categories:

1. One who prayed Witr and intended to pray afterwards: Some scholars disliked this, based on the Prophet's (PBUH) saying: "Make the last of your prayers at night Witr." Others permitted it. 2. One who prayed Witr and then decided to pray: This is permissible without dislike. Scholars differed on whether one should pray as many even-numbered rak'ahs as desired without a second Witr (which is the stronger opinion), or if one should nullify the first Witr with one rak'ah, then pray and end with Witr (narrated from some Companions).

If a person slept and did not pray Witr, or forgot it until Fajr dawned, the majority of scholars believe that it should be made up before the Fajr prayer, and this is the stronger opinion, based on the Hadith: "Whoever sleeps through his Witr or forgets it, let him pray it when he remembers it." It is better for one who fears not being able to wake up at the end of the night to pray Witr at the beginning of the night, and for one who expects to wake up to delay it.