Muwatta Malik 88
موطأ مالك#88SahihThese are the words of a Successor — the generation after the Companions — not of the Prophet ﷺ.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ الصَّلْتِ بْنِ زُيَيْدٍ، أَنَّهُ قَالَ سَأَلْتُ سُلَيْمَانَ بْنَ يَسَارٍ عَنِ الْبَلَلِ، أَجِدُهُ فَقَالَ انْضَحْ مَا تَحْتَ ثَوْبِكَ بِالْمَاءِ وَالْهَ عَنْهُ .
Yahya related to me from Malik that as-Salt ibn Zuyayd said, "I asked Sulayman ibn Yasar about a liquid I discovered. He said, 'Wash what is under your garments with water and forget about it
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:
Salim al-HilaliMaqtu Sahih
In-book reference: 2:57