Is it permissible to obtain a loan from the Central Bank of Egypt to establish a small project, where the bank pays the price of the goods to the company and collects monthly installments from the borrower with a declining interest rate of 5% (with a fixed rate of 3%)?

The correct form of Murabaha is for the bank to purchase the goods for itself, so they enter into its ownership, responsibility, and possession, and then sell them to the requesting party at an increased price, because time has a share in the price. However, if the bank pays the price of the goods on behalf of the young man without purchasing them for itself, then this is a forbidden usurious loan, due to the Almighty’s saying: "O you who have believed, fear Allah and give up what remains [due to you] of usury, if you should be believers. And if you do not, then be informed of a war [against you] from Allah and His Messenger. But if you repent, you may have your principal - [thus] you do no wrong, nor are you wronged." It is obligatory for a Muslim to verify and ascertain the true nature of a transaction and avoid what is forbidden.