Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
abudawud:604Muḥammad b. Ādam al-Maṣṣīṣī > Abū Khālid > Ibn ʿAjlān > Zayd b. Aslam > Abū Ṣāliḥ > Abū Hurayrah

The Prophet ﷺ said: The imam is appointed only to be followed. This version adds: When he recites (the Qur'an), keep silent."  

Abu Dawud said: The addition of the words "When he recites, keep silent" in this version are not guarded. The misunderstanding, according to us, is on the part of Abu Khalid (a narrator).
أبو داود:٦٠٤حَدَّثَنَا مُحَمَّدُ بْنُ آدَمَ الْمَصِّيصِيُّ حَدَّثَنَا أَبُو خَالِدٍ عَنِ ابْنِ عَجْلاَنَ عَنْ زَيْدِ بْنِ أَسْلَمَ عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ

عَنِ النَّبِيِّ ﷺ قَالَ إِنَّمَا جُعِلَ الإِمَامُ لِيُؤْتَمَّ بِهِ بِهَذَا الْخَبَرِ زَادَ وَإِذَا قَرَأَ فَأَنْصِتُوا  

قَالَ أَبُو دَاوُدَ وَهَذِهِ الزِّيَادَةُ وَإِذَا قَرَأَ فَأَنْصِتُوا لَيْسَتْ بِمَحْفُوظَةٍ الْوَهَمُ عِنْدَنَا مِنْ أَبِي خَالِدٍ

See similar narrations below:

Collected by Aḥmad, Suyūṭī
ahmad:9438ʿAbdullāh b. Muḥammad > ʿAbdullāh b. Aḥmad Wsamiʿtuh > from ʿAbdullāh b. Muḥammad b. Abū Shaybah > Abū Khālid al-Aḥmar > Ibn ʿAjlān > Zayd b. Aslam > Abū Ṣāliḥʿan Abū Hurayrah

[Machine] The Prophet ﷺ said, "The imam has been appointed to be followed. So, when he says 'Allahu Akbar,' say 'Allahu Akbar' as well, and when he recites, listen attentively."  

أحمد:٩٤٣٨حَدَّثَنَا عَبْدُ اللهِ بْنُ مُحَمَّدٍ قَالَ عَبْدُ اللهِ بْنُ أَحْمَدَ وسَمِعْتُهُ أَنَا مِنْ عَبْدِ اللهِ بْنِ مُحَمَّدِ بْنِ أَبِي شَيْبَةَ قَالَ حَدَّثَنَا أَبُو خَالِدٍ الْأَحْمَرُ عَنِ ابْنِ عَجْلَانَ عَنْ زَيْدِ بْنِ أَسْلَمَ عَنْ أَبِي صَالِحٍعَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِنَّمَا جُعِلَ الْإِمَامُ لِيُؤْتَمَّ بِهِ فَإِذَا كَبَّرَ فَكَبِّرُوا وَإِذَا قَرَأَ فَأَنْصِتُوا  

suyuti:7768a
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السيوطي:٧٧٦٨a

"إِنَّما جُعِلَ الإِمامُ ليؤتَمَّ به، فإِذا كبَّر فكبِّروا، وإِذَا قرَأَ فأَنْصِتُوا".  

[قط] الدارقطنى في السنن [ق] البيهقى في السنن وضعفاه عن أبى موسى