Fiqh-us-Sunnah Volume 2, Supererogatory Prayer, Fiqh 2.011B.
Section : The Witr Prayer. Its excellence and justification: The witr prayer is one that the Prophet sallallahu alehi wasallam practiced and which he encouraged others to practice. As such, praying witr comes under as-sunnah al-mu’akkadah. ‘Ali says: “The witr…