Sunan an-Nasa'i 4681
سنن النسائي#4681Da'ifحَدَّثَنَا مُحَمَّدُ بْنُ دَاوُدَ، قَالَ حَدَّثَنَا عَمْرُو بْنُ عَوْنٍ، قَالَ حَدَّثَنَا هُشَيْمٌ، عَنْ مُوسَى بْنِ السَّائِبِ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ، قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " الرَّجُلُ أَحَقُّ بِعَيْنِ مَالِهِ إِذَا وَجَدَهُ وَيَتْبَعُ الْبَائِعُ مَنْ بَاعَهُ " .
It was narrated from Sammurah that the Messenger of Allah said:"A man has more right to his own wealth when he finds it, and the buyer should pursue the one who sold it to him
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: 44:233