Sahih Muslim Book - 0, Hadith - 38

و حَدَّثَنِي مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ قُهْزَاذَ مِنْ أَهْلِ مَرْوَ قَالَ أَخْبَرَنِي عَلِيُّ بْنُ حُسَيْنِ بْنِ وَاقِدٍ قَالَ قَالَ عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ قُلْتُ لِسُفْيَانَ الثَّوْرِيِّ: إِنَّ عَبَّادَ بْنَ كَثِيرٍ مَنْ تَعْرِفُ حَالَهُ وَإِذَا حَدَّثَ جَاءَ بِأَمْرٍ عَظِيمٍ فَتَرَى أَنْ أَقُولَ لِلنَّاسِ لَا تَأْخُذُوا عَنْهُ؟ قَالَ سُفْيَانُ: بَلَى.قَالَ عَبْدُ اللَّهِ فَكُنْتُ إِذَا كُنْتُ فِي مَجْلِسٍ ذُكِرَ فِيهِ عَبَّادٌ أَثْنَيْتُ عَلَيْهِ فِي دِينِهِ وَأَقُولُ لَا تَأْخُذُوا عَنْهُ وَقَالَ مُحَمَّدٌ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عُثْمَانَ قَالَ قَالَ أَبِي قَالَ عَبْدُ اللَّهِ بْنُ الْمُبَارَكِ انْتَهَيْتُ إِلَى شُعْبَةَ فَقَالَ هَذَا عَبَّادُ بْنُ كَثِيرٍ فَاحْذَرُوهُ

Muhammad bin 'Abdullah bin Quhzadh - from the people of Mar, narrated to me, he said: 'Ali bin Husain bin Waqid said: 'Abdullah bin Al-Mubarak said: "I said to Sufyan Ath-Thawri: "Abbad bin Kathir is one whose situation you know about. When he narrates a report he makes serious mistakes. Do you think that I should tell the people not to accept reports from him?' Sufyan said: 'Yes.' 'Abdullah said: 'If I was in a gathering where mention was made of 'Abbad, I would praise him for his religion, but I would say: "Do not accept reports from him."' Muhammad narrated to us: 'Abdullah bin 'Uthman said: My father said: "'Abdullah bin Al-Mubarak said: I went to Shu'bah and he said: 'This is 'Abbad bin Kathir - beware of him."'