Jami` at-Tirmidhi 3931
جامع الترمذي#3931Da'ifحَدَّثَنَا بِشْرُ بْنُ مُعَاذٍ الْعَقَدِيُّ، - بَصْرِيٌّ - قَالَ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، عَنْ سَعِيدِ بْنِ أَبِي عَرُوبَةَ، عَنْ قَتَادَةَ، عَنِ الْحَسَنِ، عَنْ سَمُرَةَ بْنِ جُنْدَبٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " سَامٌ أَبُو الْعَرَبِ وَيَافِثُ أَبُو الرُّومِ وَحَامٌ أَبُو الْحَبَشِ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ . وَيُقَالُ يَافِثُ وَيَافِتُ وَيَفتُ .
Narrated Samurah bin Jundab:that the Messenger of Allah (ﷺ) said: "Sam was the father of Arabs, Yafith was the father of Romans, and Ham was the father of Ethiopians
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: 49:331