Sunan Abi Dawud 167
سنن أبي داود#167Sahihحَدَّثَنَا إِسْحَاقُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا سُفْيَانُ، عَنِ ابْنِ أَبِي نَجِيحٍ، عَنْ مُجَاهِدٍ، عَنْ رَجُلٍ، مِنْ ثَقِيفٍ عَنْ أَبِيهِ، قَالَ رَأَيْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم بَالَ ثُمَّ نَضَحَ فَرْجَهُ .
A man from Thaqif on the authority of his father reported:I saw the Messenger of Allah (ﷺ) urinate, and he sprinkled water on the private parts of his body
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-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiHasan
In-book reference: 1:167