Hadith.1158 - In a narration from Ubayd ibn Zurarah from Imam (as):
"If he (the follower) hears a murmur (of the Imam's recitation), he should not recite."
Man Lā Yaḥḍuruh al-Faqīh #1155Hadith.1161 - In a narration from Zurarah about Imam Muhammad ibn Ali Al-Baqir (as), He said:
"If you are behind an Imam, do not recite...