´It was narrated that Abu Musa Al-Ash’ari said:` “The Messenger of Allah (ﷺ) said: ‘When the Imam recites, then listen attentively, and if he is sitting (in the prayer) then the first remembrance that anyone of you recites should be the Tashahhud.’”
Hadith Referenceسنن ابن ماجه / كتاب إقامة الصلاة والسنة / 847
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم
´It was narrated that Abu Hurairah said:` “The Messenger of Allah (ﷺ) said to a man: ‘What do you say during your Salat?’ He said: ‘The Tashah-hud, then I ask Allah for Paradise, and I seek refuge with Him from Hell, but I do not understand what you and Mu’adh murmur (during Salat). He said: ‘Our murmuring revolves around the same things.’”
Hadith Referenceسنن ابن ماجه / كتاب إقامة الصلاة والسنة / 910
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:ضعيف, إسناده ضعيف, سنن أبي داود (792) وانظر الحديث الآتي (3847), انوار الصحيفه، صفحه نمبر 410
´It was narrated that Sa’ib bin Yazid said:` “The Messenger of Allah (ﷺ) had only one Mu’adh-dhin. When he came out he would give the Adhan and when he came down (from the pulpit) he would give the Iqamah. Abu Bakr and ‘Umar did likewise, but when ‘Uthman (became caliph) the numbers of people had increased, he added the third call from atop a house in the marketplace that was called Zawra’. When he came out (the Mu’adh-dhin) would call the Adhan, and when he came down from the pulpit, he would call the Iqamah.
Hadith Referenceسنن ابن ماجه / كتاب إقامة الصلاة والسنة / 1135
´It was narrated from Abu Hurairah that :` the Messenger of Allah (saas) said to a man: "What do you say during your prayer?" He said: "I recite the Tashah-hud then I ask for Allah for Paradise and see refuge with Him from Hell, but by Allah I do not understand your whispering or the whispering of Mu'adh." He said: "It is concerning them (Paradise and Hell) that we are whispering."