Sunan an-Nasa'i 1829
سنن النسائي#1829Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ مَعْمَرٍ، قَالَ حَدَّثَنَا يُوسُفُ بْنُ يَعْقُوبَ، قَالَ حَدَّثَنَا كَهْمَسٌ، عَنِ ابْنِ بُرَيْدَةَ، عَنْ أَبِيهِ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " الْمُؤْمِنُ يَمُوتُ بِعَرَقِ الْجَبِينِ " .
It was narrated from (Ibn Buraidah) that his father said:"I heard the Messenger of Allah say: 'The believer dies with sweat on his forehead
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:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 21:12