بُلُوغُ الْمَرَامِ
Bulugh al-Maram 281
The Book of Prayer
وَعَنْ نُعَيْمٍ اَلْمُجَمِّرِ - رضى الله عنه - قَالَ : { صَلَّيْتُ وَرَاءَ أَبِي هُرَيْرَةَ فَقَرَأَ : (بِسْمِ اَللَّهِ اَلرَّحْمَنِ اَلرَّحِيمِ) . ثُمَّ قَرَأَ بِأُمِّ اَلْقُرْآنِ , حَتَّى إِذَا بَلَغَ : (وَلَا اَلضَّالِّينَ) , قَالَ : آمِينَ وَيَقُولُ كُلَّمَا سَجَدَ , وَإِذَا قَامَ مِنْ اَلْجُلُوسِ : اَللَّهُ أَكْبَرُ . ثُمَّ يَقُولُ إِذَا سَلَّمَ : وَاَلَّذِي نَفْسِي بِيَدِهِ إِنِّي لَأَشْبَهُكُمْ صَلَاةً بِرَسُولِ اَللَّهِ - صلى الله عليه وسلم -} رَوَاهُ النَّسَائِيُّ وَابْنُ خُزَيْمَةَ [1]
Narrated Nu'aim Mujmir (RA): "I prayed behind Abu Hurairah (RA) and he recited Bismillahir-Rahmanir-Rahim, and then recited Umm-ul-Qur'an (Al-Fatiha) and when he reached walad-dallin, he said Amin; and then said Allahu Akbar, when he prostrated and when he stood up from his sitting position. And when he uttered the Taslim (i.e. As-Salamu 'Alaikum), he said, "I swear by the One (i.e. Allah) in Whose Hand my soul is, my Salat (prayer) resembles most that of Allah's Messenger (ﷺ) than that of anyone among you." [Reported by an-Nasa'i and lbn Khuzaimah].
Sunnah.com reference: Book 2, Hadith 167