Sahih Muslim 1123
صحيح مسلم#1123Sahihوَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، وَمُحَمَّدُ بْنُ حَاتِمٍ، قَالاَ حَدَّثَنَا ابْنُ مَهْدِيٍّ، حَدَّثَنَا شُعْبَةُ، بِالإِسْنَادَيْنِ جَمِيعًا مِثْلَهُ . وَزَادَ فِي حَدِيثِ الْحَكَمِ فَجَعَلَ النَّاسُ يَأْخُذُونَ مِنْ فَضْلِ وَضُوئِهِ .
Shu'ba narrated the same on the basis of two authorities and in the hadith transmitted by Hakam (the words are):The people began to get water that was left out of his (the Prophet's) ablution
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 4:285