Riba in Islam: Permissible?

Ruling on taking part and working in savings accounts

Paying some money to the landlord in advance so that he will reduce the rent for him

The bank is asking him to open two accounts, one for saving, on the grounds that it will protect his money

Buying a flat by instalments when there is a clause in the contract that stipulates a penalty in the event of late payment

Should he take a riba-based loan if he does not intend to pay the interest?

He has been sentenced to prison. Can he take a riba-based loan to get out of it?

Can one give a gift to a friend for buying a house with a riba-based loan?

He took a loan with riba to buy a house under pressure from his father

He needs to pay the rent and he cannot find anyone who will lend him money; can he take a riba-based loan?