نحو: أبو لهب فعل كذا
For example: Abū Lahab did such-and-such.
In ordinary established use, ‘Abū Lahab’ identifies a particular person. Its lexical imagery can also suggest associations of flame and punishment, but an additional allusive intention should not be assumed on every occasion.
The commentary examines a conceptual difficulty: if a fixed proper name is being used to identify its bearer, in what sense does the speaker additionally move toward an associated meaning? We should distinguish the named individual, the name's lexical content, and the intended allusion. Without that distinction, a phrase may be classified as metaphor or kināyah without sufficient evidence.