Is it possible to negotiate with the Islamic bank to reduce the debt amount of 67,0 Riyals, with the intention to repay due to the prohibition of debt, by paying 40,0 Riyals instead of the original amount?

If a Muslim dies owing a debt, and it was their intention to repay it, but they left nothing to settle it, then Allah Almighty, by His grace and generosity, will pay off the right of the creditors on their behalf in the Hereafter. This is based on the hadith (definition): "Whoever takes people's money with the intention of repaying it, Allah will repay it on his behalf." As for demanding that the bank waive part of its right through enticement or pressure, this is not permissible, unless the waiver is with the bank's full consent and without coercion; otherwise, the full debt must be paid.