(3) باب فِي كِتَابَةِ الْعِلْمِ
Al-Walid said :
I asked Abu `Amr: What are they writing? He said: The sermon which he heard that day.
Reference: Sunan Abi Dawud 3650
In-book reference: Book 26, Hadith 10
English translation: Book 25, Hadith 3642