Sunan Ibn Majah 1773
سنن ابن ماجه#1773Sahihحَدَّثَنَا أَحْمَدُ بْنُ عَمْرِو بْنِ السَّرْحِ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَنْبَأَنَا يُونُسُ، أَنَّ نَافِعًا، حَدَّثَهُ عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ كَانَ يَعْتَكِفُ الْعَشْرَ الأَوَاخِرَ مِنْ رَمَضَانَ . قَالَ نَافِعٌ وَقَدْ أَرَانِي عَبْدُ اللَّهِ بْنُ عُمَرَ الْمَكَانَ الَّذِي كَانَ يَعْتَكِفُ فِيهِ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ .
It was narrated from ‘Abdullah bin ‘Umar that:The Messenger of Allah (ﷺ) used to spend the last ten days of Ramadan in I’tikaf. Nafi' said: " Abdullah bin 'Umar showed me the place where the Messenger of Allah (ﷺ) used to observe I'tikaf
Scholarly Authentication
The label above is the grade most of these scholars gave — 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. Each scholar's own wording:
In-book reference: 7:136