Arabic (Original)
حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ حَدَّثَنَا عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ سَأَلَ رَجُلٌ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَهُوَ عَلَى الْمِنْبَرِ عَنْ صَلَاةِ اللَّيْلِ قَالَ مَثْنَى مَثْنَى فَإِذَا خَشِيَ أَحَدُكُمْ أَنْ يُصْبِحَ صَلَّى وَاحِدَةً فَأَوْتَرَتْ لَهُ مَا صَلَّى.
English Translation
Muhammad ibn Ubayd told us: Ubaydullah told us, from Nafi', from Ibn Umar, who said: A man asked the Messenger of Allah, peace and blessings be upon him, while he was on the pulpit, about the night prayer. He said: Two by two. When one of you fears that dawn is approaching, let him pray one rak'ah, and it will make what he has prayed odd-numbered.