Establishing the Prayer and the Sunnah Regarding Them
5/171. Chapter:
What was narrated concerning the (voluntary) night Prayer is two by two
Sunan Ibn Majah
حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ قَالَ " صَلاَةُ اللَّيْلِ مَثْنَى مَثْنَى " .
It was narrated from Ibn ‘Umar that the Messenger of Allah (ﷺ) said: “The night prayer is (to be offered) two by two.”
Reference : Sunan Ibn Majah 1319In-book reference : Book 5, Hadith 517English translation : Vol. 1, Book 5, Hadith 1319