قَالَ ابْنُ قُهْزَاذَ: وَسَمِعْتُ وَهْبَ بْنَ زَمْعَةَ يَذْكُرُ عَنْ سُفْيَانَ بْنِ عَبْدِ الْمَلِكِ، قَالَ: قَالَ عَبْدُ اللَّهِ، يَعْنِي ابْنَ الْمُبَارَكِ: رَأَيْتُ رَوْحَ بْنَ غُطَيْفٍ صَاحِبَ «الدَّمِ قَدْرِ الدِّرْهَمِ»، وَجَلَسْتُ إِلَيْهِ مَجْلِسًا، فَجَعَلْتُ أَسْتَحْيِي مِنْ أَصْحَابِي أَنْ يَرَوْنِي جَالِسًا مَعَهُ كُرْهَ حَدِيثِهِ.
Translation: Ibn Quhzādh said: “I also heard Wahb ibn Zamʿah relate, on the authority of Sufyān ibn ʿAbd al-Malik, that ʿAbd Allāh—meaning Ibn al-Mubārak—said: ‘I saw Rūḥ ibn Ghuṭayf, the man associated with the report about “blood the size of a dirham,” and sat with him for one sitting. Then I began to feel ashamed before my companions lest they see me sitting with him, because I disliked his hadith.’”
The point is transmission reliability, not the independent legal validity of the “dirham-sized blood” ruling. Al-Nawawī identifies the associated report and discusses its evidentiary standing separately.