A type of sale (ba’i) that was particularly popular in the days of early Islam and pre-Islam, where the buyer or the seller of a piece of folded cloth used, in order to execute a sale transaction, to touch that cloth as a sign of finalizing the sale, without ever seeing it. Such act of touching gave rise to the moniker “mulamasah”. Ba’i al-mulamasah is impermissible by shari’a due to the amount of gharar associated therewith (the sale is completed without its underlying object being seen by the buyer).

Ba’i al-mulamasah (in Arabic script بيع الملامسة) is known in English as touch sale.