والنص: ما سيق الكلام لأجله.
Naṣṣ is an expression brought forward specifically to establish a particular point.
With ẓāhir, a sense emerges on hearing the text. With naṣṣ, the reason the passage was introduced lends additional clarity to one of its aspects. A single passage may thus be ẓāhir for one ruling and naṣṣ for another.
Here naṣṣ names a technical degree of indication; it does not mean that every sacred text is unequivocal in all respects. It can still be discussed in relation to substantiated interpretation or specification.