A manasked Ibn 'Umar:
"How should I perform Witr?" He said: "PrayWitr with one Rak'ah." He said: "I am afraid that the peoplewill saythat I am cutting the prayer short." He said: "TheSunnah of Allah andHis Messenger." Meaning "This is the Sunnahof Allah and HisMessenger." (IT)
English reference (IT): Vol. 1, Book 5, Hadith 1176 (IT)
Arabic reference (IT): Book 5, Hadith 1232 (IT)