Sahih Muslim Introduction 62
Muhammad bin Rāfi’ and Hajjāj bin ash-Shā’ir narrated to me, they said Abd ur-Razzāq narrated to us, he said Ma’mar said:
‘I did not see Ayyūb speaking ill of anyone, ever, except for Abd al-Karīm- meaning Abū Umayyah’. So he mentioned him and said, may Allah have mercy on him ‘He is not trustworthy- he had asked me about a Ḥadīth of Ikrimah then said ‘I heard from Ikrimah’ [when relating the Ḥadīth].’
وَحَدَّثَنِي مُحَمَّدُ بْنُ رَافِعٍ، وَحَجَّاجُ بْنُ الشَّاعِرِ، قَالاَ حَدَّثَنَا عَبْدُ الرَّزَّاقِ، قَالَ قَالَ مَعْمَرٌ مَا رَأَيْتُ أَيُّوبَ اغْتَابَ أَحَدًا قَطُّ إِلاَّ عَبْدَ الْكَرِيمِ - يَعْنِي أَبَا أُمَيَّةَ - فَإِنَّهُ ذَكَرَهُ فَقَالَ رَحِمَهُ اللَّهُ كَانَ غَيْرَ ثِقَةٍ لَقَدْ سَأَلَنِي عَنْ حَدِيثٍ لِعِكْرِمَةَ ثُمَّ قَالَ سَمِعْتُ عِكْرِمَةَ ‏.‏