The name of a place that is designated not to be a locative adverb?

The student: ... that indicates a specific thing.

The Shaykh : Yes, that is correct. The indefinite is what does not indicate a specific, definite thing, unlike when the thing is specific and definite, such as: house, mosque, and the like. It has a place that is not made accusative due to being a locative adverb. For this reason, you do not say: "I sat the mosque," you do not say that. As for "I entered the mosque," there is disagreement regarding it; it is permissible in the Arabic language to say: "I entered the mosque," "I resided in the house," but the grammarians differed on it. Some say: it is accusative due to being a locative adverb, as an extension. Some say: it is accusative by removing the preposition, and the implied meaning is: "I entered in the mosque." And some say: it is accusative by analogy with the object, meaning: "I entered the mosque" as if it were an object, like their saying: the heavens is accusative by analogy with the object. So the important point is that the place is the locative adverb of the specific place; this limited one cannot be made accusative as a locative adverb.