Rent-to-own in the context of "Engagement ring"

Murabaḥah, murabaḥa, or murâbaḥah (Arabic: مرابحة, derived from ribh Arabic: ربح, meaning profit) was originally a term of fiqh (Islamic jurisprudence) for a sales contract where the buyer and seller agree on the markup (profit) or "cost-plus" price for the item(s) being sold. In recent decades it has become a term for a very common form of Islamic (i.e., "shariah-compliant") financing, where the price is marked up in exchange for allowing the buyer to pay over time—for example with monthly payments (a contract with deferred payment being known as bai-muajjal). Murabaha financing is basically the same as a rent-to-own arrangement in the non-Muslim world, with the intermediary (e.g., the lending bank) retaining ownership of the item being sold until the loan is paid in full. There are also Islamic investment funds and sukuk (Islamic bonds) that use murabahah contracts.

The purpose of murabaha is to finance a purchase without involving interest payments, which most Muslims (particularly most scholars) consider riba (usury) and thus haram (forbidden). Murabaha has come to be "the most prevalent" or "default" type of Islamic finance.