The ruling on water mixed with a pure substance and its purity

The questioner:
And how does one find it? The one who finds water for ablution in a prison, or a drop, or soap.

The Shaykh:
This is the last point of disagreement among scholars: when water is mixed with a pure substance, does it lose its purity or not? There is disagreement on this, and the correct view is that if the change is slight, it does not strip it of the name "water" as being pure. However, if it loses the name "water" and the mixed substance becomes predominant, then it is not called water; rather, it is called, for example, tea. If one puts tea in it and it turns red, it is called tea, not water. Or if milk is added to it and it becomes milk, it is not called water; the milk has predominated, so it is named by another name. This does not purify, because it transforms from the name "water" to another name due to the predominance of what was mixed with it. As long as the name "water" remains and the mixture is pure, it does not strip it of its purity, according to the correct view. Yes.