A delay in a Murabaha transaction shouldn't simply become a way to increase the debt just because time has passed, like adding interest on late payments.
Steps
Your contract may include arrangements to address late payments and other expenses or obligations within the approved Sharia-compliant structure.
If you are late, don't assume the outcome: ask the bank for a breakdown of the required amount, the principal payment, any additional charges, and their justifications.
The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.