Sahih al-Bukhari 6061
صحيح البخاري#6061Sahihحَدَّثَنَا آدَمُ، حَدَّثَنَا شُعْبَةُ، عَنْ خَالِدٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرَةَ، عَنْ أَبِيهِ، أَنَّ رَجُلاً، ذُكِرَ عِنْدَ النَّبِيِّ صلى الله عليه وسلم فَأَثْنَى عَلَيْهِ رَجُلٌ خَيْرًا، فَقَالَ النَّبِيُّ صلى الله عليه وسلم " وَيْحَكَ قَطَعْتَ عُنُقَ صَاحِبِكَ ـ يَقُولُهُ مِرَارًا ـ إِنْ كَانَ أَحَدُكُمْ مَادِحًا لاَ مَحَالَةَ فَلْيَقُلْ أَحْسِبُ كَذَا وَكَذَا. إِنْ كَانَ يُرَى أَنَّهُ كَذَلِكَ، وَحَسِيبُهُ اللَّهُ، وَلاَ يُزَكِّي عَلَى اللَّهِ أَحَدًا ". قَالَ وُهَيْبٌ عَنْ خَالِدٍ " وَيْلَكَ ".
Narrated Abu Bakra:A man was mentioned before the Prophet (ﷺ) and another man praised him greatly The Prophet (ﷺ) said, "May Allah's Mercy be on you ! You have cut the neck of your friend." The Prophet (ﷺ) repeated this sentence many times and said, "If it is indispensable for anyone of you to praise someone, then he should say, 'I think that he is so-and-so," if he really thinks that he is such. Allah is the One Who will take his accounts (as He knows his reality) and no-one can sanctify anybody before Allah." (Khalid said, "Woe to you," instead of "Allah's Mercy be on you)
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: 78:91