Can he be alone with a woman to lead her in prayer?

Ruling on praying behind someone who smokes

Praying behind a sufi imam

Appointing someone else to take over as imam during the prayer

Should he pray behind someone who says that it is not obligatory for women to cover their hair?

Should he do the prostration of forgetfulness after doing the part of the prayer that he has to make up?

Ruling on a debtor leading the prayer

When should the one who is praying behind the imam bow? When the imam says takbeer, or straight after the takbeer, or when?

When should the takbeeraat of movement be said during the prayer?

If some of the members of the congregation are praying outside the mosque and the power cuts out