The coming of Islam gave the old concept a greater symbolism. The very design of the Persian mosque, with its central copurtyard surrounded by four eivans, as opposed to the traditional Arab hypostyle mosque, in which there was one principal eivan which faced onto three cloisters, is evidence of the persistence of the concept.
In addition the increasingly gnostic tendencies of Islam, which can be attributed in the main to the influence of the Sufis, began to use the concept as a hook on which to hang some important concepts. Under this paradigm the relationship between heaven and man is symbolised by the squaring of the circls or the transition from the single point of the circular dome to the square of the room below.
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the concept of chahar taq.
Fundamental
Concepts.25-January-95