What is the latest time at which the witr prayer is permissible?

Question:
Q: Your Eminence, I ask for clarification: What is the latest time of the night at which the witr prayer is permissible?

Answer:
The witr prayer is from the time of the 'Isha' prayer until the dawn breaks, as in the hadith of Kharijah ibn Hudhafah: . This is its time: from after the 'Isha' prayer and its regular voluntary prayer (rawatib) until the dawn breaks.
So whoever fears that sleep will overcome him should pray in the first part of the night and perform the witr in the first part of the night. And whoever hopes to be able to stand in the last part of the night and is able to stand in the last part of the night, that is better. The Prophet (peace and blessings be upon him) performed the witr in the first part of the night, and he performed the witr in the middle of the night, then his witr settled in the last third of the night (peace and blessings be upon him). And it is authentic in the hadith of Jabir in Muslim: he said, may the peace and blessings of Allah be upon him: .
So whoever is able to do it in the last part of the night, that is better. It is the time of the Divine Descent, about which the Prophet (peace and blessings be upon him) said: . This is a great hadith, mass-transmitted (mutawatir), indicating the virtue of standing in night prayer, and that the last part of the night is more deserving of this great act of worship.
And this Descent is befitting for Allah; He does not resemble His creation in any of His attributes. So His Descent (Glorified and Exalted is He), His rising above the Throne, His anger, His pleasure, His mercy, His speech, His hearing, and His sight, all of it is befitting for Allah ; He does not resemble His creation in any of His attributes, Exalted and Majestic is He.
This is the statement of the people of the Sunnah and the community, as He (Glorified and Exalted is He) said: [Surah al-Shura: 11]. So He descends as He wills, in a descent befitting His Majesty, not resembling His creation in His descent. Just as He rose above the Throne in a manner befitting His Majesty, as Malik (may Allah have mercy on him) said: "The rising (istiwa') is known, the how (kayf) is unknown, and belief in it is obligatory." And the meaning of that came from Umm Salama (may Allah be pleased with her), and from Rabi'ah, the shaykh of Malik (may Allah have mercy on them both). And this is the statement of the people of the Sunnah, all of them, regarding all the attributes: that they are passed over as they came, with belief in them, and holding to what they indicate, and that they are true, but in the manner befitting Allah, not resembling His creation in any of His attributes . Indeed, the people of the Sunnah and the community say regarding the verses of the attributes and their hadiths: "Pass them over as they came; their recitation is their interpretation; pass them over without asking how (takyif), meaning: with belief in them, and affirming them for Allah, without distortion (tahrif), without denial (ta'til), without asking how (takyif), and without likening Allah to creation (tamthil)."