´It was narrated from Anas that:` The Prophet (ﷺ) fell from a horse onto his right side, and they entered upon him to visit him. The time for prayer came, and when he had finished praying he said: "The Imam is appointed to be followed, so when he bows, then bow, and when he stands up, then stand up, and when he says: 'Sami' Allahu liman hamidah (Allah hears the one who praises Him)' then say: 'Rabbana wa lakal-hamd (Our Lord, and to You be the praise).'"
´It was narrated that Rifa'ah bin Rafi said:` "We were praying behind the Messenger of Allah (ﷺ) one day and when he raised his head from bowing he said: 'Sami Allahu liman hamidah (Allah hears the one who praises Him).' A man behind him said: 'Rabbana wa lakal-hamd, hamdan kathiran tayyiban mubarakan fih. (O our Lord, and to You be praise, much blessed and pure praise.)' When the Messenger of Allah (ﷺ) had finished, he said: "Who is the one who spoke just now?" The man said: 'I did, O Messenger of Allah.' The Messenger of Allah (ﷺ) said: 'I saw thirty-some angels rushing to see which of them would write it down first.'"
Hadith Referenceسنن نسائي / كتاب التطبيق / 1063
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح بخاري