Jami` at-Tirmidhi 3760
جامع الترمذي#3760Sahihحَدَّثَنَا أَحْمَدُ بْنُ إِبْرَاهِيمَ الدَّوْرَقِيُّ، قَالَ حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ، قَالَ حَدَّثَنِي أَبِي قَالَ، سَمِعْتُ الأَعْمَشَ، يُحَدِّثُ عَنْ عَمْرِو بْنِ مُرَّةَ، عَنْ أَبِي الْبَخْتَرِيِّ، عَنْ عَلِيٍّ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ لِعُمَرَ فِي الْعَبَّاسِ " إِنَّ عَمَّ الرَّجُلِ صِنْوُ أَبِيهِ " . وَكَانَ عُمَرُ كَلَّمَهُ فِي صَدَقَتِهِ . هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
Narrated 'Ali:that concerning Al-'Abbas, the Prophet (ﷺ) said to 'Umar: "Indeed, the uncle of a man is the Sinw of his father." And 'Umar had spoken to him concerning his 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:
In-book reference: 49:159