Sunan Abi Dawud 163
سنن أبي داود#163Sahihحَدَّثَنَا مُحَمَّدُ بْنُ رَافِعٍ، حَدَّثَنَا يَحْيَى بْنُ آدَمَ، قَالَ حَدَّثَنَا يَزِيدُ بْنُ عَبْدِ الْعَزِيزِ، عَنِ الأَعْمَشِ، بِإِسْنَادِهِ بِهَذَا الْحَدِيثِ قَالَ مَا كُنْتُ أُرَى بَاطِنَ الْقَدَمَيْنِ إِلاَّ أَحَقَّ بِالْغَسْلِ حَتَّى رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَمْسَحُ عَلَى ظَهْرِ خُفَّيْهِ .
This tradition has been transmitted through a different chain of narrators. This version adds:“I always preferred to wash the under part of the feet until I saw the Messenger of Allah (ﷺ) wiping the upper part of them
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: 1:163