Sahih Bukhari 779

Narrated Abu Huraira: The Prophet said, Say Amin when the Imam says it and if the Amin of any one of you coincides with that of the angels then all his past sins will be forgiven. Ibn Shihab said, Allah's Apostle used to Say Amin. ..

Narrated Abu Huraira: Allah's Apostle said, If any one of you says, Amin and the angels in the heavens say Amin and the former coincides with the latter, all his past sins will be forgiven. ..

Narrated Abu Huraira: Allah's Apostle said, Say Amen when the Imam says 'Ghairi l-maghdubi `alaihim wala d-daalleen' (not the path of those who earn Your Anger (such as Jews) nor of those who go astray (such as Christians)); all the past sins of..

Narrated Abu Bakra: I reached the Prophet in the mosque while he was bowing in prayer and I too bowed before joining the row mentioned it to the Prophet and he said to me, May Allah increase your love for the good. But do not repeat it again..

Narrated `Imran bin Husain: I offered the prayer with `Ali in Basra and he made us remember the prayer which we used to pray with Allah's Apostle. `Ali said Takbir on each rising and bowing. ..

Narrated Abu Salama: When Abu Huraira led us in prayer he used to say Takbir on each bowing and rising. On the completion of the prayer he used to say, My prayer is more similar to the prayer of Allah's Apostle than that of anyone of you. ..