Murabaḥah is a term for a sales contract where the buyer and seller agree on the markup, the ratio between the cost of a good or service and what?
Markup (business) Markup is the ratio between the cost of a good or service and its selling price. It is expressed as a percentage over the cost. A markup is added onto the total cost incurred by the producer of a good or service in order to cover the costs of doing business and create a profit. The total cost reflects the total amount of both fixed and variable expenses to produce and distribute a product. Markup can be expressed as a fixed amount or as a percentage of the total cost or selling price. Retail markup is commonly calculated as the difference between wholesale price and retail price, as a percentage of wholesale. Other methods are also used.
Sunnah prayer Sunnah prayer (Arabic: صلاة السنة‎ ‎ ) is an optional salah that can be performed by Muslims at almost any time of the day. These prayers are performed in addition to the five daily prayers, which are compulsory for all Muslims. There are a range of prayers available: some are done at the same time as the compulsory prayers, some are done only at certain times, e.g. late at night, and some are only done for specific occasions such as during a drought. All of these optional prayers were originally performed by Muhammad.