$BTC

Yes, it is true that buying and selling without immediate exchange can be a subject of debate.

There are several reasons that make this matter a topic of discussion:

Islamic Law: Islam requires immediate exchange for the validity of a sale, meaning the delivery of the goods and the monetary counterpart must occur in the contract session or shortly thereafter. This condition aims to ensure that each party receives their due and to avoid disputes.

Civil Law: Civil laws vary in different countries regarding the conditions for the validity of a contract. Some laws require immediate exchange, while others allow for a postponement of the exchange.