Stars Dunya: he used to write (them) down

Hammam ibn Munabbih reported having heard Abu Hurairah say, “There is not any of the Companions of Allah’s Messenger (صلی اللہ علیہ وآلہ وسلم) who has (narrated) more Ahadith than me except Abdullah ibn Amr (RA). He used to write (them) down while I did not write.”

(الفاظ جامع ترمذی کے ہیں)

صحیح بخاری:جلد اول:حدیث نمبر 116