There is none among the companions of the Prophet ﷺ who has narrated more Hadiths than I except ʿAbdullah bin ʿAmr (bin Al-ʿAs) who used to write them and I never did the same.
سَمِعْتُ أَبَا هُرَيْرَةَ يَقُولُ مَا مِنْ أَصْحَابِ النَّبِيِّ ﷺ أَحَدٌ أَكْثَرَ حَدِيثًا عَنْهُ مِنِّي إِلاَّ مَا كَانَ مِنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو فَإِنَّهُ كَانَ يَكْتُبُ وَلاَ أَكْتُبُ