عُقْبَاهَا

عُقْبَاهَا is a phrase (شِبْهُ الجُمْلَةِ) consisting of a possessed noun and a possessive noun compound

PhraseNoun / NounNoun Noun
شِبْهُ الجُمْلَةِمُضَافٌ وَ مُضَافٌ إِلَيْهِمُضَافٌ إِلَيْهِمُضَافٌ
PhrasePossessive compoundPossessive noun/ownerNoun possessed/owned
its consequenceعُقْبَاهَا=هَا+عُقْبَا
the consequence thereofitthe consequence of
Surah/Below is the only verse in the holy Quran containing the possessive nominal compound عُقْبَاهَا
Verse
91-14and He fears not the consequences thereofوَلَا يَخَافُ عُقْبَاهَا