Sunan Abi Dawud 136
سنن أبي داود#136Sahihحَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، حَدَّثَنَا زَيْدٌ، - يَعْنِي ابْنَ الْحُبَابِ - حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ ثَوْبَانَ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ الْفَضْلِ الْهَاشِمِيُّ، عَنِ الأَعْرَجِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم تَوَضَّأَ مَرَّتَيْنِ مَرَّتَيْنِ .
Narrated AbuHurayrah: The Prophet (my peace be upon him) washed the limbs in ablution twice
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 Lighairihi
Zubair Ali ZaiIsnaad Hasan
In-book reference: 1:136