Sahih Muslim 6333
صحيح مسلم#6333Sahihحَدَّثَنَا أَبُو كُرَيْبٍ، حَدَّثَنَا يَحْيَى بْنُ آدَمَ، حَدَّثَنَا قُطْبَةُ، عَنِ الأَعْمَشِ، عَنْ مُسْلِمٍ، عَنْ مَسْرُوقٍ، عَنْ عَبْدِ اللَّهِ، قَالَ وَالَّذِي لاَ إِلَهَ غَيْرُهُ مَا مِنْ كِتَابِ اللَّهِ سُورَةٌ إِلاَّ أَنَا أَعْلَمُ حَيْثُ نَزَلَتْ وَمَا مِنْ آيَةٍ إِلاَّ أَنَا أَعْلَمُ فِيمَا أُنْزِلَتْ وَلَوْ أَعْلَمُ أَحَدًا هُوَ أَعْلَمُ بِكِتَابِ اللَّهِ مِنِّي تَبْلُغُهُ الإِبِلُ لَرَكِبْتُ إِلَيْهِ .
Abdullah reported:By Him besides Whom there is no god, there is no chapter in the Book of Allah about which I do not know as to where it was revealed and there is no verse about which I do not know in what context it was revealed, and if I were to know of one having a better understanding of the Book of Allah than I (and I could reach him) on the back of the mule, I would have definitely gone to him on camel's back
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 44:163