A sale (ba’i) that involves the exchange of an asset for specified monetary units (the price). With respect to the price (thaman), this sale subdivides into four types:

• Bargaining sale (ba’i al-musawamah): the sale of a commodity for an agreed-upon price irrespective of its original cost.
• Discount sale (ba’i al-wadhee’yah or ba’i al-hateetah): the sale of a commodity for less than its purchase price.
• Respective sale (ba’i al-tawliah): the sale of a commodity for its purchase price. The seller recover its purchase cost without making a profit or incurring a loss on the commodity.
• Cost-plus sale (ba’i al-murabahah): the sale of a commodity for its purchase price in addition to a certain mark-up (profit). The profit is negotiated between the two parties before they enter into the contract. It can be a percentage of the purchase price or a lump sum.

In except of bargaining sale, the other three types of absolute sale belong to the class of buyu’ al-amanah (trust-based sales).

In Arabic, absolute sale is known as ba’i mutlaq.