934 — Nasr ibn ‘Ali narrated to us: Safwan ibn ‘Isa informed us, from Bishr ibn Rafi‘, from Abu ‘Abd Allah, the nephew of Abu Hurayrah, from Abu Hurayrah, who said: When the Messenger of Allah, may Allah bless him and grant him peace, recited {Not of those who have incurred wrath, nor of those who have gone astray}, he would say “Amin” until those in the first row beside him could hear it.(1)

935 — Al-Qa‘nabi narrated to us, from Malik, from Sumayy, the freed slave of Abu Bakr, from Abu Salih al-Samman, from Abu Hurayrah, that the Prophet, may Allah bless him and grant him peace, said: “When the imam says {Not of those who have incurred wrath, nor of those who have gone astray}, then say ‘Amin,’ for whoever’s saying coincides with the saying of the angels, his previous sins will be forgiven.”(2)

============================================

The audible utterance of “Amin” has already preceded with a sound chain of transmission.

As for the salutation of peace to the right and left, it has supporting evidence in the hadith of Ibn Mas‘ud that will come under number (996), and another in the hadith of Sa‘d ibn Abi Waqqas in Muslim (582).

(1) A sound hadith, but this chain is weak due to the weakness of Bishr ibn Rafi‘ and the obscurity of Abu ‘Abd Allah, the nephew of Abu Hurayrah. Ibn Majah (853) also transmitted it via the route of Safwan ibn ‘Isa, with this chain. Ibn Hibban (1806), al-Daraqutni (1274), al-Hakim 1/223, and al-Bayhaqi 2/58 transmitted from al-Zuhri, from Sa‘id ibn al-Musayyab and Abu Salamah, from Abu Hurayrah, who said: When the Messenger of Allah, may Allah bless him and grant him peace, finished reciting the Mother of the Qur’an, he raised his voice and said “Amin.” Al-Nasa’i in al-Mujtaba (905) and Ibn Hibban (1797) transmitted from Nu‘aym ibn ‘Abd Allah al-Mujmir, who said: I prayed behind Abu Hurayrah, and he recited “In the name of Allah, the Merciful, the Compassionate,” then recited the Mother of the Qur’an until, when he reached {Not of those who have incurred wrath, nor of those who have gone astray}, he said “Amin,” and the people said “Amin” … the hadith, and at its end he said: “By Him in whose hand my soul is, I am the most similar of you in prayer to the Messenger of Allah, may Allah bless him and grant him peace.” Its chain is sound, and Ibn Khuzaymah (499) declared it sound.

(2) Its chain is sound. Al-Qa‘nabi is ‘Abd Allah ibn Maslamah, and Abu Salih al-Samman is Dhakwan.