Sahih Muslim Book - 0, Hadith - 64

و حَدَّثَنِي حَسَنُ بْنُ عَلِيٍّ الْحُلْوَانِيُّ قَالَ حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ أَخْبَرَنَا هَمَّامٌ قَالَ دَخَلَ أَبُو دَاوُدَ الْأَعْمَى عَلَى قَتَادَةَ فَلَمَّا قَامَ قَالُوا إِنَّ هَذَا يَزْعُمُ أَنَّهُ لَقِيَ ثَمَانِيَةَ عَشَرَ بَدْرِيًّا فَقَالَ قَتَادَةُ هَذَا كَانَ سَائِلًا قَبْلَ الْجَارِفِ لَا يَعْرِضُ لشَيْءٍ مِنْ هَذَا وَلَا يَتَكَلَّمُ فِيهِ فَوَ اللَّهِ مَا حَدَّثَنَا الْحَسَنُ عَنْ بَدْرِيٍّ مُشَافَهَةً وَلَا حَدَّثَنَا سَعِيدُ بْنُ الْمُسَيَّبِ عَنْ بَدْرِيٍّ مُشَافَهَةً إِلَّا عَنْ سَعْدِ بْنِ مَالِكٍ.

It was narrated that Hammam said: "Abu Dawud Al-A'ma entered upon Qatadah and when he left, they said: 'This man claims that he met eighteen men who had been present at (the battle at) Badr.' Qatadah said: 'He used to beg before the plague, and he has nothing to do with that at all, and he should not speak. By Allah, Al-Hasan did not narrate directly from anyone who had been present at Badr, and Sa'eed bin Al-Musayyab did not narrate directly from anyone who had been present at Badr, except for Sa'd bin Malik."'