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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bayhaqi:2890 – Abū Bakr b. al-Ḥārith al-Faqīh > ʿAlī b. ʿUmar al-Ḥāfiẓ > Abū Ḥāmid Muḥammad b. Hārūn al-Ḥaḍramī > Muḥammad b. Yaḥyá al-Qaṭīʿī > Sālim b. Nūḥ > ʿUmar b. ʿĀmir And Saʿīd b. Abū ʿArūbah > Qatādah > Yūnus b. Jubayr / Abū Ghallāb > Ḥiṭṭān b. ʿAbdullāh al-Raqāshī > Ṣallá Binā Abū Mūsá

[Machine] Abu Musa, indeed the Messenger of Allah ﷺ used to teach us, when he led us in prayer, he would say: "Indeed the Imam has been appointed to be followed, so when he says Allahu Akbar, say Allahu Akbar, and when he recites, be silent." Ali bin Umar Salim bin Nuh said: "He is not a strong narrator." The Shaykh has said: "Yet, he."  

البيهقي:٢٨٩٠ – أَخْبَرَنَا أَبُو بَكْرِ بْنُ الْحَارِثِ الْفَقِيهُ أنبأ عَلِيُّ بْنُ عُمَرَ الْحَافِظُ ثنا أَبُو حَامِدٍ مُحَمَّدُ بْنُ هَارُونَ الْحَضْرَمِيُّ ثنا مُحَمَّدُ بْنُ يَحْيَى الْقَطِيعِيُّ ثنا سَالِمُ بْنُ نُوحٍ ثنا عُمَرُ بْنُ عَامِرٍ وَسَعِيدُ بْنُ أَبِي عَرُوبَةَ عَنْ قَتَادَةَ عَنْ يُونُسَ بْنِ جُبَيْرٍ يَعْنِي أَبَا غَلَّابٍ عَنْ حِطَّانَ بْنِ عَبْدِ اللهِ الرَّقَاشِيِّ قَالَ صَلَّى بِنَا أَبُو مُوسَى فَقَالَ

أَبُو مُوسَى إِنَّ رَسُولَ اللهِ ﷺ كَانَ يُعَلِّمُنَا إِذَا صَلَّى بِنَا فَقَالَ إِنَّمَا جُعِلَ الْإِمَامُ لِيُؤْتَمَّ بِهِ فَإِذَا كَبَّرَ فَكَبِّرُوا وَإِذَا قَرَأَ فَأَنْصِتُوا قَالَ عَلِيُّ بْنُ عُمَرَ سَالِمُ بْنُ نُوحٍ لَيْسَ بِالْقَوِيِّ قَالَ الشَّيْخُ وَقَدْ  

رَوَاهُ مُحَمَّدُ بْنُ عَجْلَانَ مِنْ وَجْهٍ آخَرَ

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:995 – al-a neighborūd b. Muʿādh > Abū Khālid al-Aḥmar > Muḥammad b. ʿAjlān > Zayd b. Aslam > Abū Ṣāliḥ > Abū Hurayrah

"The Messenger of Allah ﷺ said: 'The Imam is appointed to be followed, so when he says the takbir, say the takbir, and when he recites, be silent, and when he says: "Sami' Allahu liman hamidah (Allah hears those who praise Him)," say: "Allahumma rabbana lakal-hamd (Our Lord, to You be praise)." (Using translation from Nasāʾī 921)  

الكبرى للنسائي:٩٩٥ – أَخْبَرَنَا الْجَارُودُ بْنُ مُعَاذٍ قَالَ حَدَّثَنَا أَبُو خَالِدٍ الْأَحْمَرُ عَنْ مُحَمَّدِ بْنِ عَجْلَانَ عَنْ زَيْدِ بْنِ أَسْلَمَ عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ إِنَّمَا جُعِلَ الْإِمَامُ لِيُؤْتَمَّ بِهِ فَإِذَا كَبَّرَ فَكَبِّرُوا وَإِذَا قَرَأَ فَأَنْصِتُوا وَإِذَا قَالَ سَمِعَ اللهُ لِمَنْ حَمِدَهُ فَقُولُوا اللهُمَّ رَبَّنَا لَكَ الْحَمْدُ