Reference: al-Hifth – Ahammiyyatuhu, ‘Ajaa.ibuhu, Tareeqatuhu, Asbaabuhu p18, Tathkiratul-Huffaaz v1 p281, al-Bidaayah wan-Nihaayah v14 p14
narrated:
al-Ameen and al-Ma.moon travelled to ‘Abdullaah ibn Idrees who narrated a hundred hadeeth to them. al-Ma.moon then said:
‘O Uncle, if you permit me, I shall repeat them [all] from memory.’
So he permitted him, and he repeated them [all] from his memory as he had heard them, and Ibn Idrees was surprised at his memorisation.
