Sunan an-Nasa'i 1233
سنن النسائي#1233Sahihأَخْبَرَنَا عَمْرُو بْنُ سَوَّادِ بْنِ الأَسْوَدِ بْنِ عَمْرٍو، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، قَالَ أَنْبَأَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ جَعْفَرِ بْنِ رَبِيعَةَ، عَنْ عِرَاكِ بْنِ مَالِكٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم سَجَدَ يَوْمَ ذِي الْيَدَيْنِ سَجْدَتَيْنِ بَعْدَ السَّلاَمِ .
It was narrated from Abu Hurairah that:The Messenger of Allah (ﷺ) prostrated twice after the salam on the day of Dhul-Yadain
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:
In-book reference: 13:55