Sunan Abi Dawud 4838
سنن أبي داود#4838Sahihحَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، حَدَّثَنَا مُحَمَّدُ بْنُ بِشْرٍ، عَنْ مِسْعَرٍ، قَالَ سَمِعْتُ شَيْخًا، فِي الْمَسْجِدِ يَقُولُ سَمِعْتُ جَابِرَ بْنَ عَبْدِ اللَّهِ، يَقُولُ كَانَ فِي كَلاَمِ رَسُولِ اللَّهِ صلى الله عليه وسلم تَرْتِيلٌ أَوْ تَرْسِيلٌ .
Narrated Jabir ibn Abdullah: The Messenger of Allah (ﷺ) spoke in a distinct and leisurely manner
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 Lighairihi
Zubair Ali ZaiDaif
In-book reference: 43:66