ي

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

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

ي is a pronoun of the first person

Surah/Below are the 5+ verses in the holy Quran containing the attached pronounي
Verse
   
 As for man, when his Lord tries him by honoring him and favoring himفَأَمَّا الإِنْسَانُ إِذَا مَا ابْتَلَاهُ رَبُّهُ فَأَكْرَمَهُ وَنَعَّمَهُ
89-15then he says “my Lord has honored me”فَيَقُوْلُ رَبِّى أَكْرَمَنِ
 but when He tries him by straitening his provisionوَأَمَّآ إِذَا مَا ابْتَلَاهُ فَقَدَرَ عَلَيْهِ رِزْقَهُ
89-16then he says “my Lord has humiliated me”فَيَقُوْلُ رَبِّى أَهَانَنِ
89-24He will say “Alas would that I had sent forth (good) for my life hereafterيَقُوْلُ يَالَيْتَنِى قَدَّمْتُ لِحَيَاتِى
89-29Enter among My slavesفَادْخُلِى فِي عِبَادِى
89-30and Enter My Paradiseوَادْخُلِى جَنَّتِى
109-6For you your religion and for me my religionلَكُمْ دِيْنُكُمْ وَلِيَ دِيْنِ