Sahih al-Bukhari 848
صحيح البخاري#848Sahihوَقَالَ لَنَا آدَمُ حَدَّثَنَا شُعْبَةُ، عَنْ أَيُّوبَ، عَنْ نَافِعٍ، قَالَ كَانَ ابْنُ عُمَرَ يُصَلِّي فِي مَكَانِهِ الَّذِي صَلَّى فِيهِ الْفَرِيضَةَ. وَفَعَلَهُ الْقَاسِمُ. وَيُذْكَرُ عَنْ أَبِي هُرَيْرَةَ رَفَعَهُ لاَ يَتَطَوَّعُ الإِمَامُ فِي مَكَانِهِ. وَلَمْ يَصِحَّ.
Narrated Nafi:Ibn Umar used to offer prayers (Nawafil) at the place where he had offered the compulsory prayer. Al-Qasim (bin Muhammad bin Abi Bakr) did the same. The narration coming from Abu Hurairah (from the Prophet (ﷺ)) forbidding the Imam from offering prayers (optional prayer) at the same place where he was offered the compulsory prayer is incorrect
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: 10:240