The phrase signifies the calculation of obligatory charity on wealth according to Islamic principles. This calculation involves determining the net worth of assets that meet specific criteria, such as exceeding a minimum threshold (nisab) and being held for a complete lunar year (hawl). For example, if an individual possesses savings, gold, or business inventory that surpasses the nisab value, a specific percentage, typically 2.5%, is due as charity.
This wealth-based calculation serves as a cornerstone of Islamic finance and social welfare. It promotes economic justice by redistributing wealth from the affluent to the needy, fostering a more equitable society. Historically, it has played a vital role in supporting charitable causes, infrastructure development, and poverty alleviation within Muslim communities.