Buying zakaah items after giving them to the poor person

Is it permissible to sell Zamzam water?

If his relatives want particular types of perfume, is it permissible for him to buy them and sell them to them?

He wrote in the contract a price higher than that which was paid, and took it from the neighbour

Buying real estate through the bank

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