Sahih al-Bukhari 128
صحيح البخاري#128Sahihحَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا مُعَاذُ بْنُ هِشَامٍ، قَالَ حَدَّثَنِي أَبِي، عَنْ قَتَادَةَ، قَالَ حَدَّثَنَا أَنَسُ بْنُ مَالِكٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم وَمُعَاذٌ رَدِيفُهُ عَلَى الرَّحْلِ قَالَ " يَا مُعَاذُ بْنَ جَبَلٍ ". قَالَ لَبَّيْكَ يَا رَسُولَ اللَّهِ وَسَعْدَيْكَ. قَالَ " يَا مُعَاذُ ". قَالَ لَبَّيْكَ يَا رَسُولَ اللَّهِ وَسَعْدَيْكَ. ثَلاَثًا. قَالَ " مَا مِنْ أَحَدٍ يَشْهَدُ أَنْ لاَ إِلَهَ إِلاَّ اللَّهُ وَأَنَّ مُحَمَّدًا رَسُولُ اللَّهِ صِدْقًا مِنْ قَلْبِهِ إِلاَّ حَرَّمَهُ اللَّهُ عَلَى النَّارِ ". قَالَ يَا رَسُولَ اللَّهِ، أَفَلاَ أُخْبِرُ بِهِ النَّاسَ فَيَسْتَبْشِرُوا قَالَ " إِذًا يَتَّكِلُوا ". وَأَخْبَرَ بِهَا مُعَاذٌ عِنْدَ مَوْتِهِ تَأَثُّمًا .
Narrated Anas bin Malik:"Once Mu`adh was along with Allah's Messenger (ﷺ) as a companion rider. Allah's Messenger (ﷺ) said, "O Mu`adh bin Jabal." Mu`adh replied, "Labbaik and Sa`daik. O Allah's Messenger (ﷺ)!" Again the Prophet (ﷺ) said, "O Mu`adh!" Mu`adh said thrice, "Labbaik and Sa`daik, O Allah's Messenger (ﷺ)!" Allah's Messenger (ﷺ) said, "There is none who testifies sincerely that none has the right to be worshipped but Allah and Muhammad is his Apostle, except that Allah, will save him from the Hell-fire." Mu`adh said, "O Allah's Messenger (ﷺ) ! Should I not inform the people about it so that they may have glad tidings?" He replied, "When the people hear about it, they will solely depend on it." Then Mu`adh narrated the above-mentioned Hadith just before his death, being afraid of committing sin (by not telling the knowledge)
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 al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 3:70