The World Federation One Stop Fiqh

Ruling 1736

Buying and selling while one is performing iʿtikāf is unlawful; and based on obligatory precaution, any type of business transaction – such as hiring (ijārah), sleeping partnership (muḍārabah),7 and exchange (muʿāwaḍah) – is also unlawful, although the transaction (muʿāmalah) that is conducted is valid.

7 This is a contract between two people in which one of them provides capital to the other so that the latter may trade with it and the profits be divided between them. See Chapter 14.