رِزْقَ

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

الرِّزْقُ is the natural state of this definite noun and becomes الرِّزْقَ due to it being the: 1) المَفْعُوْلُ بِهِ object of a verb or 2) اسْمُ of إِنَّ or 3) خَبَرُ of كَانَ or 4) المَفْعُوْلُ فِيْهِ adverb of time or place or 5) المَفْعُوْلُ لَهُ noun that gives the reason for doing a thing or 6) المَفْعُوْلُ مَعَهُ noun that comes after the و which means “along with” or 7) المَفْعُوْلُ المُطْلَقُ is the مَصْدَرٌ of the verb occurring in the sentence or 8) الحَالُ adverb of manner or 9) التَّمْيِيْزُ noun that specifies the meaning of a vague word or 10) المُسْتَثْنَى noun that comes after إِلَّا meaning “except” or 11) المُنَادَى noun of calling or 12) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

الرِّزْقَ loses it’s definite article, becoming رِزْقَ due to it being a possessed noun

Bounty; Gift

To provide, supply, bestow, grant.

Surah/Below are the 4 verses in the holy Quran consisting of the nounرِزْقَ
Verse 
and how many a creature carries not its sustenance, Allah SWT sustains themوَكَأَيِّن مِّن دَآبَّةٍ لَّا تَحْمِلُ رِزْقَهَا اللهُ يَرْزُقُهَا
29-60and you, He is the All Hearing, the All Knowingوَإِيَّاكُم وَهُوَ السَّمِيْعُ العَلِيْمُ
56-82
67-21
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