Abu Hurairah reported,

You claim that Abu Hurayrah narrates too many hadith from the Messenger of Allah ﷺ. Allah is the appointed reckoner. I was a poor man who stayed close to the Messenger of Allah ﷺ just to fill my stomach. The Muhajirun were occupied with their trade in the markets, and the Ansar were occupied with tending to their properties.One day I witnessed the Messenger of Allah ﷺ say, "Whoever spreads out his cloak until I finish my words, then gathers it back to himself, will never forget anything he hears from me."So I spread out a cloak I was wearing. By the One who sent him with the truth, I have never forgotten a single thing I heard from him.

Bukhari 7354

Sahih

حدثنا علي حدثنا سفيان حدثني الزهري أنه سمعه من الأعرج يقول أخبرني

أبو هريرة قال

إنكم تزعمون أن أبا هريرة يكثر الحديث على رسول الله ﷺ والله الموعد إني كنت امرأ مسكينا ألزم رسول الله ﷺ على ملء بطني وكان المهاجرون يشغلهم الصفق بالأسواق وكانت الأنصار يشغلهم القيام على أموالهم فشهدت من رسول الله ﷺ ذات يوم وقال من يبسط رداءه حتى أقضي مقالتي ثم يقبضه فلن ينسى شيئا سمعه مني فبسطت بردة كانت علي فوالذي بعثه بالحق ما نسيت شيئا سمعته منه

البخاري 7354صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Adhering to the Book and the Sunnah
Chapter
Evidence against those who say that the rulings of the Prophet ﷺ were apparent
Numbering
Darussalam 7354
Bukhari 7354