Sahih Muslim 4943
صحيح مسلم#4943Sahihوَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ، حَدَّثَنَا بَهْزٌ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا سُهَيْلٌ، بِهَذَا الإِسْنَادِ وَفِي حَدِيثِهِ قَالَ أَخْبَرَنِي عُبَيْدُ اللَّهِ بْنُ مِقْسَمٍ، عَنْ أَبِي صَالِحٍ، وَزَادَ، فِيهِ " وَالْغَرِقُ شَهِيدٌ " .
Another version of the tradition narrated on the authority of Suhail thouch a different chain of transmitters contains the additional words:" A drowned person is a martyr
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 33:238