وَالْمُضْمَرُ لَا يُوصَفُ وَلَا يُوصَفُ بِهِ.
Translation: A pronoun is neither described by a regular adjective nor itself made a regular adjective, according to this rule.
Within the book’s ordinary naʿt construction, do not treat a bare pronoun as if it were an ordinary noun taking an adjective. Other constructions such as badal or emphasis must be analyzed separately.