Sunan Ibn Majah 2698
سنن ابن ماجه#2698Sahihحَدَّثَنَا سَهْلُ بْنُ أَبِي سَهْلٍ، حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ، عَنْ مُغِيرَةَ، عَنْ أُمِّ مُوسَى، عَنْ عَلِيِّ بْنِ أَبِي طَالِبٍ، قَالَ كَانَ آخِرُ كَلاَمِ النَّبِيِّ صلى الله عليه وسلم " الصَّلاَةَ وَمَا مَلَكَتْ أَيْمَانُكُمْ " .
It was narrated that 'Ali bin Abu Talib said:“The last words of the Prophet (ﷺ) were: The prayer; and those whom your right hands prossess.”
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 Lighairihi
Zubair Ali ZaiSahih
In-book reference: 22:4