Sunan Ibn Majah 1520
سنن ابن ماجه#1520Hasanحَدَّثَنَا مُحَمَّدُ بْنُ الصَّبَّاحِ، أَنْبَأَنَا يَحْيَى بْنُ الْيَمَانِ، عَنْ مِنْهَالِ بْنِ خَلِيفَةَ، عَنْ عَطَاءٍ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ أَدْخَلَ رَجُلاً قَبْرَهُ لَيْلاً وَأَسْرَجَ فِي قَبْرِهِ .
It was narrated from Ibn ‘Abbas that the Messenger of Allah (ﷺ) placed a man in his grave at night, and he lit a lamp in his grave
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-AlbaniHasan
Muhammad Fouad Abd al-BaqiHasan
Shuaib Al ArnautHasan Lighairihi
Zubair Ali ZaiDaif
In-book reference: 6:88