Not every installment plan on a credit card is necessarily a Murabaha transaction.
Steps
Islamic cards can be structured differently, and the method of converting a purchase into installments depends on the product.
Before clicking "installment," know the total amount after installments, the fees, and the specific formula used, rather than relying solely on the terms 0% or "Islamic."
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.