حَدَّثَنَا مُحَمَّدٌ: حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عُثْمَانَ، قَالَ: قَالَ أَبِي: قَالَ عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ: انْتَهَيْتُ إِلَى شُعْبَةَ فَقَالَ: هَذَا عَبَّادُ بْنُ كَثِيرٍ فَاحْذَرُوهُ.
Translation: Muḥammad narrated to us; ʿAbd Allāh ibn ʿUthmān narrated to us. He said: My father said that ʿAbd Allāh ibn al-Mubārak said, “I came to Shuʿbah, and he said, ‘This is ʿAbbād ibn Kathīr; beware of him.’”
This additional route reinforces the practical warning without pretending that both accounts have identical wording. Faḥdharūhu is caution concerning reception of his transmissions, not a casual personal quarrel.