And know that the difference between the mixture of a single element and its mixing with one another or its mixing with another element is like the mixing of water with dirt, which gives rise to the name clay, so what is dirt and what is water, and mixing in one element is like the Nile and the Asfidag, if they are mixed by crushing and their parts are mixed and blended, it is not possible to separate them. Between them, another color occurs between them, which is not for one of them, and this mixing creates a ruling in the end of natural actions. Just as fresh water and salt water, if they mix, another taste occurs between them, neither salt nor fresh. This is what the mixing in one element gave, and likewise water with what is cold if the fire in it gives heat in such a way that That you do not keep it cold or reach its degree of heat, so that it is lukewarm, hot or cold. This is a mixing that is not similar to the mixing of one element into another, nor the mixing of the tw