أَبِي

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – أَبِي is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

الأَبُوا is the natural state of this definite noun and it changes to الأَبِي due to: 1) a preposition that precedes it or 2) a possessed noun that precedes it or 3) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

الأَبِي loses it’s definite article, becoming أَبِي due to it being a possessed noun

Grammatical analysis of أَبِي
اسْمٌ مَجْرُوْرٌ وَعَلَامَةُ جَرِّهِ اليَاؤُ لِأَنَّهُ الأَسْمَاءُ الخَمْسَةُ وَهُوَ مُضَافٌ
مَعْرِفَةٌمُفْرَدٌمُذَكَّرٌمَجْرُوْرٌأ ب وبَابٌأَسْمَاءُ الْخَمْسَةُاسْمٌالْمَصْدَرُ
DefiniteSingularMasculineGenitiveRootFatherPattern The five nounsNounVerbal noun
Surah/Below are the 18 +2 verses in the holy Quran containing the genitive, possessed, singular, nounأَبِي
Verse
6-74
9-114
12-4
12-9
12-59
12-63
12-801
12-81
12-93
19-42
21-52
22-78
26-70
26-86
28-251
37-85
43-26
60-4
80-35
111-1Perished, the two hands of Abu Lahab (Father of Flame) and perish heتَبَّتْ يَدَآ أَبِي لَهَبٍ وَّتَبَّ