Hadith 1258

Ibn ‘Umar reported the Prophet as saying, "Make the last of your prayer at night a witr.” Muslim transmitted it.

وَعَنِ ابْنِ عُمَرَ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «اجْعَلُوا آخِرَ صَلَاتِكُمْ بِاللَّيْلِ وترا» . رَوَاهُ مُسلم

Reference: 5612580
In-book reference: Book 4, Hadith 1258