Sunan Ibn Majah 1318
سنن ابن ماجه#1318Sahihحَدَّثَنَا أَحْمَدُ بْنُ عَبْدَةَ، أَنْبَأَنَا حَمَّادُ بْنُ زَيْدٍ، عَنْ أَنَسِ بْنِ سِيرِينَ، عَنِ ابْنِ عُمَرَ، قَالَ كَانَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ يُصَلِّي مِنَ اللَّيْلِ مَثْنَى مَثْنَى .
It was narrated that Ibn ‘Umar said:“The Messenger of Allah (ﷺ) used to offer the night prayers two by two.”
Scholarly Authentication
The label above is the grade most of these scholars gave, each scholar counted once — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. When they judged only its chain of narrators (“Isnaad”), the label says “Sound chain”. Each scholar's own wording:
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih
In-book reference: 5:516