Arabic (Original)
حَدَّثَنَا عَبْدُ الرَّزَّاقِ وَابْنُ بَكْرٍ قَالَا أَخْبَرَنَا ابْنُ جُرَيْجٍ قَالَ أَخْبَرَنِي نَافِعٌ أَنَّ ابْنَ عُمَرَ كَانَ يَقُولُ مَنْ صَلَّى مِنْ اللَّيْلِ فَلْيَجْعَلْ آخِرَ صَلَاتِهِ وِتْرًا قَبْلَ الصُّبْحِ كَذَلِكَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَأْمُرُهُمْ.
English Translation
Abdur-Razzaq and Ibn Bakr told us, they said: Ibn Jurayj informed us, saying: Nafi' informed me that Ibn Umar used to say: Whoever prays at night should make the last of his prayer witr before dawn. That is how the Messenger of Allah (peace and blessings be upon him) used to command them.