It was narrated from Ibn ‘Umar that the Messenger of Allah ﷺ said:
“The night prayer is (to be offered) two by two.”

حَدَّثَنَا مُحَمَّدُ بْنُ رُمْحٍ، أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ـ ﷺ ـ قَالَ " صَلاَةُ اللَّيْلِ مَثْنَى مَثْنَى " .