فَحَصْنَا الْوَثَائِقَ، وَفَحَصْنَا الْخَتْمَ خَاصَّةً.
We examined the documents and specifically examined the seal.
If the seal is treated as a noteworthy component of the documents under consideration, mentioning it again after the general reference can function as specific-after-general. Its separate mention foregrounds special importance; it need not mean the seal was excluded from the earlier examination.
If, however, al-wathāʾiq denotes other documents and the seal is not included in that set, the construction is merely coordination of distinct items. The classification depends on real inclusion within the general category, not on the mere recurrence of a noun.