It wasnarrated that Ibn 'Umar said:
"The Prophet (ﷺ) was askedaboutthe night prayer. He said: 'Pray two by two, and if you fearthatdawn is coming, then perform Witr with one Rak'ah.'" (DE)
English reference (DE): Vol. 1, Book 5, Hadith 1320 (DE)
Arabic reference (DE): Book 5, Hadith 1381 (DE)