Sunan Abi Dawud 4608
سنن أبي داود#4608Sahihحَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنِ ابْنِ جُرَيْجٍ، قَالَ حَدَّثَنِي سُلَيْمَانُ، - يَعْنِي ابْنَ عَتِيقٍ - عَنْ طَلْقِ بْنِ حَبِيبٍ، عَنِ الأَحْنَفِ بْنِ قَيْسٍ، عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " أَلاَ هَلَكَ الْمُتَنَطِّعُونَ " . ثَلاَثَ مَرَّاتٍ .
‘Abd Allah b. Mas’ud reported the Prophet (ﷺ) as saying:"Beware! The extremists perished," saying it three times
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
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (2670)
In-book reference: 42:13