If a portion of the size of a fingernail, for example, remains on his foot where water has not reached, while the rest of the foot is wet, should he wipe with the water remaining on his foot, or is a new washing required?

The questioner : If there is a portion on his foot the size of a fingernail, but the trace of wetness remains on his foot, is it permissible for him to wipe with the remaining water, or do we say that it is necessary to pass water over it?

The Shaykh : No, washing is necessary. For example, if his leg is dry from now on.

The questioner : There may be a trace of wetness.

The Shaykh : If it is possible to scoop water with his leg, there is no harm.

The questioner : A little, but.

The Shaykh : Does the water flow over the limb, or does it not flow? I do not think it flows, even if the wetness remains, it does not flow over the limb.

The questioner : What is the evidence for the flow of water?

The Shaykh : By analogy to what?

The questioner : For the obligation of the flow of water?

The Shaykh : That is what is called washing, and for this reason, Allah distinguished between wiping and washing.