The word "rajul" (man) is indefinite; when the definite article "al" is added to it, it becomes definite. Here, the *tamyiz* (distinguishing noun) is indefinite, yet "al" has been added to it: "al-nafs ya Qays." Is it true that the *tamyiz* never becomes definite?

The questioner : Now, "rajul" (man) is indefinite. When "al" is added to it, it becomes definite.

The Shaykh : Yes.
The student: The *tamyiz* (distinguishing noun), the *tamyiz* is indefinite!

The Shaykh : Yes.
The student: And when "al" was added to it, it did not become definite!

The Shaykh : Yes, indeed, out of necessity.
The student: But it did not become definite?

The Shaykh : Because the *tamyiz* (distinguishing noun) cannot be definite, whereas "rajul" (man) can be definite.
The student: But even with "al," it cannot be definite!?

The Shaykh : It cannot be definite.
The student: What is the rule?

The Shaykh : The rule is: If we say that the *tamyiz* (distinguishing noun) must be indefinite, and then we find it to be definite, we tell the one who made it definite: "You made a mistake," if it was his choice. However, if it was out of necessity, necessity permits what is otherwise prohibited.
The student: It never becomes definite?

The Shaykh : Absolutely.