Sahih al-Bukhari 1571
صحيح البخاري#1571Sahihحَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، قَالَ حَدَّثَنِي مُطَرِّفٌ، عَنْ عِمْرَانَ ـ رضى الله عنه ـ قَالَ تَمَتَّعْنَا عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَنَزَلَ الْقُرْآنُ قَالَ رَجُلٌ بِرَأْيِهِ مَا شَاءَ.
Narrated `Imran:We performed Hajj-at-Tamattu` in the lifetime of Allah's Messenger (ﷺ) and then the Qur'an was revealed (regarding Hajj-at-Tamattu`) and somebody said what he wished (regarding Hajj-at-Tamattu`) according his own opinion
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: 25:57