This document defines waqf as the irrevocable dedication of a portion of one's wealth for legitimate causes or charitable ends to get closer to Allah. It discusses the pillars of waqf (waqif, mawquf, mawquf 'alaih), conditions (property must be tangible and usable, donor must own it, beneficiaries must be alive), and types (religious, philanthropic, posterity waqf). The characteristics of waqf include the perpetuity of its dedication and the inviolability of the founder's stipulations.