Sunan Abi Dawud 1016
سنن أبي داود#1016Sahihحَدَّثَنَا هَارُونُ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا هَاشِمُ بْنُ الْقَاسِمِ، حَدَّثَنَا عِكْرِمَةُ بْنُ عَمَّارٍ، عَنْ ضَمْضَمِ بْنِ جَوْسٍ الْهِفَّانِيِّ، حَدَّثَنِي أَبُو هُرَيْرَةَ، بِهَذَا الْخَبَرِ قَالَ ثُمَّ سَجَدَ سَجْدَتَىِ السَّهْوِ بَعْدَ مَا سَلَّمَ .
Abu Hurairah reported; He then made two prostration on account of forgetfulness after he had given the salutation
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:
Al-AlbaniHasan Sahih
Muhammad Muhyi Al-Din Abdul HamidHasan Sahih
Shuaib Al ArnautSahih
Zubair Ali ZaiIsnaad Hasan
In-book reference: 2:627