Mishkat al-Masabih
Mishkat al-Masabih 1259
The Witr - Section 1
Arabic hadith text
وَعَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «بَادرُوا الصُّبْح بالوتر» . وَرَاه مُسلم
Translation
He reported the Prophet as saying, "Hasten to pray a witr before morning.” Muslim transmitted it.