Q:
1. Volume 1, Book 12, Number 802 (Sahih Bukhari): Narrated by Abu Ma'bad (the freed slave of Ibn 'Abbas) Ibn 'Abbas told me, "In the lifetime of the Prophet it was the custom to celebrate Allah's praises aloud after the compulsory congregational prayers." Ibn 'Abbas further said, "When I heard the Dhikr, I would learn that the compulsory congregational prayer had ended."
Why don't people do loud zikr after prayer, and most people think that Barelvis do it and they think it is bidah. So what is the correct Islamic view?
2. Volume 1, Book 12, Number 747 (Sahih Bukhari): Narrated by 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."
How can we know that the imam has said amin after prayer if he does not say it aloud. So to follow this hadith the imam needs to say amin for us to say amin. So many imaams in Pakistan don't say the amin out aloud, and say it quietly. So why don't they say it aloud when the hadith clearly explains to say it aloud for the imam.