'Alee ibn Muhammad ibn 'Abdullaah informed us…on the authority of Hammaan ibn Munabbih that he heard Abu Hurayrah saying:
"There were none from the companions of the Messenger - صلى الله عليه و سلم - who had more Hadeeth than me except 'Abdullah ibn 'Amr ibn al 'Aass. For indeed he used to write and I never used to write."
Ahmad ibn Muhammad ibn Ghaalib narrated to us…on the authority of Wahb in Munabbih that his brother said: I heard Abu Hurayrah saying:
"There are none from amongst the companions of the Messenger - صلى الله عليه و سلم - who have more Hadeeth on his authority than me, except 'Abdullah ibn 'Amr ibn al 'Aass, for indeed he used to write while I never used to write."
On the authority of Abu al Qaasim al Hasan ibn al Husayn ibn 'Alee ibn al Mundhir al Qaadee…on the authority of al Mugheerah ibn Hakeem who heard Abu Hurayrah saying:
"There was nobody more knowledgeable about the Hadeeth of the Messenger of Allah - صلى الله عليه و سلم - than me, except 'Abdullah ibn 'Amr ibn al 'Aass. He took permission from the Messenger of Allah - صلى الله عليه و سلم - to write what he heard from him, and he gave him permission. So he used to write with his hand and memorize with his heart, while I only used to memorize with my heart."
[Narrations by 'Abdullah ibn 'Amr ibn al 'Aass in this regard:]
Abu Nu'aym al Haafidh informed us…on the authority of Shu'ayb ibn Muhammad ibn 'Abdullah ibn 'Umar who said: 'Abdullah ibn 'Amr said:
"O Messenger of Allah, I hear things from you that im afraid to forget, do you permit me to write them?"
He responded: "Write."
On the authority of al Qaadee Abu 'Umar al Qaasim ibn Ja'far ibn 'Abdulwaahid al Haashimee…on the authority of 'Abdullah ibn 'Amr ibn al 'Aass who said:
"I used to write everything I heard from the Messenger of Allah - صلى الله عليه و سلم - in order to memorize it. So the people of Quraysh prohibited me saying:
'Do you indeed write everything you hear from the Messenger of Allah - صلى الله عليه و سلم , while the Messenger of Allah is human, he speaks at times of anger and at times of content?!'
So I refrained from writing. I then mentioned this to the Messenger of Allah - صلى الله عليه و سلم ; he said:
"Write! For indeed nothing emerged from it [his tongue] except the truth!"
Note: How do we reconcile between these Ahadeeth and the fact that Abu Hurayrah was the Sahabee who narrated the most Hadeeth as is in this article: The Seven Companions with the Most Narrations" ?
It is that ‘Abdullah ibn ‘Amr ibn in ‘Aass memorized the Hadeeth but did not narrate as much, while Abu Hurayrah memorized and narrated. So 'Abdullah ibn 'Amr memorised and had the most narrations, while Abu Hurayrah narrated the most - may Allah be pleased with them both.
There are two types of memory according to the scholars of Hadeeth, both are accepted. The memory of the heart (mind) and the memory of the books (i.e. writing).
In these narrations, is the virtue and importance of writing knowledge.