Sunan an-Nasa'i 4350
سنن النسائي#4350Sahihأَخْبَرَنَا إِسْحَاقُ بْنُ مَنْصُورٍ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، قَالَ حَدَّثَنَا مَالِكٌ، عَنْ صَفْوَانَ بْنِ سُلَيْمٍ، عَنْ سَعِيدِ بْنِ سَلَمَةَ، عَنِ الْمُغِيرَةِ بْنِ أَبِي بُرْدَةَ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم فِي مَاءِ الْبَحْرِ " هُوَ الطَّهُورُ مَاؤُهُ الْحَلاَلُ مَيْتَتُهُ " .
It was narrated from Abu Hurairah, that the Prophet (said), concerning the water of the sea:"Its water is pure (and Purification) and its 'dead meat' is permissible (to eat)
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:
In-book reference: 42:88