Sahih Muslim 1286
صحيح مسلم#1286Sahihوَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، وَأَبُو كُرَيْبٍ قَالاَ حَدَّثَنَا أَبُو مُعَاوِيَةَ، ح قَالَ وَحَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا حَفْصٌ، وَأَبُو مُعَاوِيَةَ عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، أَنَّ النَّبِيَّ صلى الله عليه وسلم سَجَدَ سَجْدَتَىِ السَّهْوِ بَعْدَ السَّلاَمِ وَالْكَلاَمِ .
Abdullah b. Mas'ud reported:The Apostle of Allah (ﷺ) performed two prostrations for forgetfulness after salutation and talking
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: 5:124