Reference: al-Hadaa.iq libni-Jowzee v1 p25, al-Hifth – Ahammiyyatuhu, ‘Ajaa.ibuhu, Tareeqatuhu, Asbaabuhu p29
said:
Ishaaq ibn Raahawayh dictated 11,000 hadeeth to us from memory. He then read them (what he had dictated) to us and [found he] had not made a single mistake [in what he had dictated to us].
