Praying behind someone who works in a riba-based bank

It is makrooh for the imam to single himself out in joint supplication to the exclusion of the people praying behind him

His voice is beautiful but he recites Qunoot in Fajr every Friday; should I pray Taraweeh behind him?

If there are two who came late to the prayer can one of them be an imam and lead the other?

Can the Mu’adhdhin Be the Imam?

What should a person do if it is too hard for him when the imam prostrates for a long time?

How should they deal with an imam who disobeys Allaah in the mosque? What is the ruling on their praying behind him?

Should he pray behind one who did not wash his hands again when he washed his arms in udu?

Did it ever happen that the Prophet (peace and blessings of Allaah be upon him) started to pray when he was junub by mistake?

When is it prescribed for the person praying behind the imam to say the Taslim to his right?