Selling products by instalment for the cash price through the bank

Is It Prohibited to Sell Something For Twice its Original Price?

It is not permissible to add more to the price in return for adding something to the goods after agreeing on the price, unless that is done with the consent and knowledge of the purchaser

Can he rent the traditional set of jewellery and then return it to the jeweller in order to get married?

What conditions should be met in order for the bank’s purchase scheme (muraabahah) to be considered permissible

Giving up his place on the property investment waiting list in return for a sum of money

What is the fee when a sale is made?

Taking a sample of clothing from a store and making something similar with the intention of selling it

Is it permissible to buy a company on condition that one pay off its debts?

He bought an apartment on the basis that it would be a certain area (square footage), and it was built larger. Does he have to pay the difference?