بِطَرِيقِ التَّأْوِيلِ قِسْمَيْنِ: أَحَدُهُمَا الْمُتَعَارَفُ
An exemplary name may be considered in two interpretive modes, beginning with the familiar instance.
One reading keeps the well-known original individual in mind as the standard of the trait. Another uses the salient property to present a second, unfamiliar individual as falling under the same rhetorical designation.
The case of Ḥātim demonstrates this distinction. The historical person is still a definite individual, but extraordinary generosity can make another person a candidate for that name in figurative speech. The resemblance lies in the characteristic, not in replacing the original person's identity.