حَدَّثَنَا يَزِيدُ أَخْبَرَنَا سُلَيْمَانُ التَّيْمِيُّ عَنْ طَاوُسٍ عَنِ ابْنِ عُمَرَ عَنْ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ صَلَاةُ اللَّيْلِ مَثْنَى مَثْنَى فَإِذَا خِفْتَ الصُّبْحَ فَأَوْتِرْ بِوَاحِدَةٍ
مسند امام احمد بن حنبل · Hadith 4848
It was narrated from Ibn ‘Umar that the Prophet (PBUH) said: The night prayers are two (rak’ahs) by two, then when you fear that dawn is approaching, Witr with one rak'ah."
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020