Sunan Ibn Majah 1564
سنن ابن ماجه#1564Sahihحَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى، حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ الرَّقَاشِيُّ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ يَزِيدَ بْنِ جَابِرٍ، عَنِ الْقَاسِمِ بْنِ مُخَيْمِرَةَ، عَنْ أَبِي سَعِيدٍ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ نَهَى أَنْ يُبْنَى عَلَى الْقَبْرِ .
It was narrated from Abu Sa’eed that the Prophet (ﷺ) forbade building structures over graves
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: 6:132