وَحَدَّثَنِي عَبْدُ الرَّحْمَنِ بْنُ بِشْرٍ الْعَبْدِيُّ، قَالَ: سَمِعْتُ يَحْيَى بْنَ سَعِيدٍ الْقَطَّانَ، ذُكِرَ عِنْدَهُ مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ عُبَيْدِ بْنِ عُمَيْرٍ اللَّيْثِيُّ، فَضَعَّفَهُ جِدًّا. فَقِيلَ لِيَحْيَى: أَضْعَفُ مِنْ يَعْقُوبَ بْنِ عَطَاءٍ؟ قَالَ: نَعَمْ. ثُمَّ قَالَ: مَا كُنْتُ أَرَى أَنَّ أَحَدًا يَرْوِي عَنْ مُحَمَّدِ بْنِ عَبْدِ اللَّهِ بْنِ عُبَيْدِ بْنِ عُمَيْرٍ.
Translation: ʿAbd al-Raḥmān b. Bishr heard Yaḥyā al-Qaṭṭān strongly weaken Muḥammad b. ʿAbd Allāh b. ʿUbayd b. ʿUmayr al-Laythī. Asked whether he was even weaker than Yaʿqūb b. ʿAṭāʾ, he answered yes and expressed surprise that anyone narrated from him.
The report illustrates comparative levels of weakness: “weak” is not a single uniform grade. The comparison signals severity while other transmission routes still require their own assessment.