(a) Hittan bin Abdullah al-Raqashi (may Allah have mercy on him) said: We prayed with Abu Musa al-Ash'ari (may Allah be pleased with him); then he mentioned the full hadith from the Prophet (peace and blessings be upon him). In it is: "When the imam says the takbir, say the takbir, and when he recites, remain silent."
(b) Imam Muslim (may Allah have mercy on him), after mentioning this narration through Ishaq bin Ibrahim, said: In the hadith of Jarir from Sulayman from Qatadah there is the addition: "When he recites, remain silent."
(c) Abu Abdullah al-Hafiz (may Allah have mercy on him) said: I heard Abu Ali al-Hafiz (may Allah have mercy on him) say: In this hadith Jarir, narrating from al-Taymi, contradicted all the students of Qatadah. What is preserved from Qatadah is the narration of Hisham al-Dastuwa'i, Hammam, Sa'id bin Abi Arubah, Ma'mar bin Rashid, Abu Awanah, al-Hajjaj bin al-Hajjaj and those who followed them, that is, without this wording. Salim bin Nuh narrated it from Ibn Abi Arubah and Umar bin Amir from Qatadah, and he erred in it.
Abu Dawud al-Sijistani said: His words "and remain silent" are not preserved (mahfuz) and are of no worth.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 2889