Abu IdrisAl-Khawlani narrated that a man asked Abu Darda':
"Should Irecite when the Imam is reciting?" He said: "A man asked theProphet(ﷺ) whether there was recitation in every prayer. TheMessenger ofAllah (ﷺ) said: 'Yes.' A man among the peoplesaid: 'It has becomeobligatory.'" (DE)
English reference (DE): Vol. 1, Book 5, Hadith 842 (DE)
Arabic reference (DE): Book 5, Hadith 891 (DE)