ضُحَاهَا

ضُحَاهَا is a verbal sentence  (الجُمْلَةُ الفِعْلِيَّةُ) consisting of a verb and an object in the form of a third-person, feminine, singular attached pronoun

فِعْلٌ وَمَفْعُوْلٌ بِهِمَفْعُوْلٌ بِهِ فَاعِلٌ فِعْلٌ
Verbal sentenceObject SubjectVerb
الجُمْلَةُ الفِعْلِيَّةُAttached pronounDetached pronoun
AccusativeNominative
 it’s brightnessضُحَاهَا=هَا+مُسْتَتِرٌ تَقْدِيْرُهُ هُوَ+ضُحَا
brightness of itit(it)brightness of
Surah/Below are the 3 verses in the holy Quran containing the verb and third person, feminine, singular objectضُحَاهَا
Verse
79-29and He darkened its night and brought out its brightnessوَأَغْطَشَ لَيْلَهَا وَأَخْرَجَ ضُحَاهَا
On the day they see it, it will feel as if theyكَأَنَّهُمْ يَوْمَ يَرَوْنَهَا
79-46not they remained except an evening or a morningلَمْ يَلْبَثُوآ إِلَّا عَشِيَّةً أَوْ ضُحَاهَا
91-1By the sun and its brightnessوَالشَّمْسِ وَضُحَاهَا