1158. hadíth
وَ فِي رِوَايَةِ عُبَيْدِ بْنِ زُرَارَةَ عَنْهُ عَلَيْهِ اَلسَّلاَمُ: «أَنَّهُ إِنْ سَمِعَ اَلْهَمْهَمَةَ فَلاَ يَقْرَأْ.
In a narration from Ubayd ibn Zurarah from Imam (a.s): "If he (the follower) hears a murmur (of the Imam's recitation), he should not recite."