For the easy understanding of readers this following article shall be divided into following 5 parts and then they shall be explained in detail
A) Importance + Legal status of the prayer itself
B) It’s number of rakats
C) Witr is prayed like Maghrib with one salutation in last Rakat.
D) Saying Qunoot before going in Ruku of Third Rakat.
E) For how Long does it’s time last?
Let us start with the Importance + Legal status of this prayer according to Shariah.
The ahnaaf are special in considering the witr prayer as “Wajib (necessary)” whereas the La-Madhabiyyah either consider it as Sunnat-e-Mu’akdah or Nafl prayer (Note: All 4 valid schools remain correct even if they differ with one another whereas the La-Madhabiyyah sect even if it reaches a right opinion they would still be Ahlul Bidah as they are not following a sound school of jurisprudence at first place.) The stance of Ahnaaf is most strict in regards to following Sunnah.