Sunan Ibn Majah 1538
سنن ابن ماجه#1538Sahihحَدَّثَنَا سَهْلُ بْنُ أَبِي سَهْلٍ، حَدَّثَنَا مَكِّيُّ بْنُ إِبْرَاهِيمَ أَبُو السَّكَنِ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ صَلَّى عَلَى النَّجَاشِيِّ فَكَبَّرَ أَرْبَعًا .
It was narrated from Ibn ‘Umar that the Prophet (ﷺ) offered the funeral prayer for Najashi and said four Takbir
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:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 6:106