Muwatta Malik 1507
موطأ مالك#1507SahihThese are the words of a Companion, not of the Prophet ﷺ. The chain is graded on its own terms.
حَدَّثَنِي مَالِكٌ، عَنِ ابْنِ شِهَابٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ بْنِ مَسْعُودٍ، عَنْ عَبْدِ اللَّهِ بْنِ عَبَّاسٍ، أَنَّهُ قَالَ سَمِعْتُ عُمَرَ بْنَ الْخَطَّابِ، يَقُولُ الرَّجْمُ فِي كِتَابِ اللَّهِ حَقٌّ عَلَى مَنْ زَنَى مِنَ الرِّجَالِ وَالنِّسَاءِ إِذَا أُحْصِنَ إِذَا قَامَتِ الْبَيِّنَةُ أَوْ كَانَ الْحَبَلُ أَوْ الاِعْتِرَافُ .
Malik related to me from Ibn Shihab from Ubaydullah ibn Abdullah ibn Utba ibn Masud that Abdullah ibn Abbas said, "I heard Umar ibn al- Khattab say, 'Stoning is in the Book of Allah for those who commit adultery, men or women when they are muhsan and when there is clear proof of pregnancy or a confession
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: 41:8