(Imām Bukhārī narrates): Musaddad narrated the hadith to us, he said: Yahya bin Sa'id narrated the hadith to us, from Ubaidullah, he said: Nafi' narrated the hadith to me, from Abdullah, from the Prophet ﷺ, that he said:
Make your last prayer at night Witr.
حَدَّثَنَا مُسَدَّدٌ قَالَ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ عَنْ عُبَيْدِ اللَّهِ حَدَّثَنِي نَافِعٌ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيهِ وَسَلَّمَ قَالَ اجْعَلُوا آخِرَ صَلَاتِكُمْ بِاللَّيْلِ وِتْرًا
Reference: Sahih Al Bukhari 998