سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 1670
The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
How to pray at night
أَخْبَرَنَا مُوسَى بْنُ سَعِيدٍ، قَالَ حَدَّثَنَا أَحْمَدُ بْنُ عَبْدِ اللَّهِ بْنِ يُونُسَ، قَالَ حَدَّثَنَا زُهَيْرٌ، قَالَ حَدَّثَنَا الْحَسَنُ بْنُ الْحُرِّ، قَالَ حَدَّثَنَا نَافِعٌ، أَنَّ ابْنَ عُمَرَ، أَخْبَرَهُمْ أَنَّ رَجُلاً سَأَلَ رَسُولَ اللَّهِ صلى الله عليه وسلم عَنْ صَلاَةِ اللَّيْلِ قَالَ مَثْنَى مَثْنَى فَإِنْ خَشِيَ أَحَدُكُمُ الصُّبْحَ فَلْيُوتِرْ بِوَاحِدَةٍ .
Ibn Umar told them that : A man asked the Messenger of Allah (ﷺ)about prayers at night, and he said: "Two by two, then if one of you fears that dawn will come, let him pray witr with one."
Sunan an-Nasa'i, 1670Sahih (Darussalam)