What Is the Least Number of Rak`ahs for Witr Prayer?
Witr prayer is one of the greatest acts of worship that draw one closer to Allah. It is the best prayer after the five obligatory prayers. It is a highly recommended Sunnah that a Muslim should observe regularly and not neglect. It was narrated that the Prophet (peace be upon him) said: “If anyone oversleeps and misses the witr, or forgets it, he should pray when he remembers.” (Authenticated by Al-Albani)
The majority of the scholars, including the Maliki, Shafi`i, Hanbali schools, are of the view that the minimum number of rak`ahs for witr is one rak`ah, because the Prophet (peace be upon him) said: “Witr is one rak`ah at the end of the night.” (Muslim)
In another hadith, the Prophet (peace be upon him) said: “The night prayers are two (rak`ahs) by two, but if one of you fears that dawn is about to break, let him pray one rak’ah to make what he has prayed odd-numbered.” (Agreed Upon)
For more information about the rulings of offering the witr prayer, you could watch this short talk with Dr. Muhammad Salah.
Source: Huda Youtube Channel.Soucre Link