Sunan Abi Dawud 3749
سنن أبي داود#3749Sahihحَدَّثَنَا مُوسَى بْنُ إِسْمَاعِيلَ، وَمُحَمَّدُ بْنُ مَحْبُوبٍ، قَالاَ حَدَّثَنَا حَمَّادٌ، عَنْ عَاصِمٍ، عَنْ أَبِي صَالِحٍ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " الضِّيَافَةُ ثَلاَثَةُ أَيَّامٍ فَمَا سِوَى ذَلِكَ فَهُوَ صَدَقَةٌ " .
Narrated AbuHurayrah: The Prophet (ﷺ) said: Hospitality extend for three days, and what goes beyond that is sadaqah (charity)
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-AlbaniHasan Sahih Isnaad
Muhammad Muhyi Al-Din Abdul HamidHasan Sahih Isnaad
Zubair Ali ZaiIsnaad Hasan
In-book reference: 28:14