Jami` at-Tirmidhi 877
جامع الترمذي#877Sahihحَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا جَرِيرٌ، عَنْ عَطَاءِ بْنِ السَّائِبِ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " نَزَلَ الْحَجَرُ الأَسْوَدُ مِنَ الْجَنَّةِ وَهُوَ أَشَدُّ بَيَاضًا مِنَ اللَّبَنِ فَسَوَّدَتْهُ خَطَايَا بَنِي آدَمَ " . قَالَ وَفِي الْبَابِ عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو وَأَبِي هُرَيْرَةَ . قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عَبَّاسٍ حَدِيثٌ حَسَنٌ صَحِيحٌ .
Ibn Abbas narrated that:The Messenger of Allah said: "The Black Stone descended from the Paradise, and it was more white than milk, then it was blackened by the sins of the children of Adam
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: 9:70