At the core of rizq is the absolute knowledge and power of Allah. The Quran frequently reminds humanity that Allah alone is the ultimate Provider, and His provision is limitless and without depletion 38:54. He orchestrates the means of living for all creatures, even those that cannot carry their own sustenance 15:20, 29:60. Tafsir Ibn Kathir elaborates on this, explaining that Allah "allots its provision to it even though it is weak, and makes it easy for it," providing for "ants in the depths of the earth, the birds in the air and the fish in the sea" and how many a creature carries not its [own provision. all...](29:60).

Allah's provision is not uniform; He extends it for whom He wills and restricts it for whom He wills, all with His perfect knowledge 29:62. This is not a matter of chance, but a deliberate act of divine wisdom and testing, as al-Jalalayn clarifies, "He makes it abundant for whomever He will of His servants by way of a test and He straitens He restricts it for him after having extended it that is for whomever He will to try" 29:62. This demonstrates Allah's comprehensive knowledge of what is suitable for each individual, whether wealth or poverty 29:62.

Prophet Musa's reply to Pharaoh encapsulates this fundamental truth: Our Lord is He Who gave to each thing its form and nature, then guided it aright. Ibn Kathir explains this to mean that Allah created everything suitable for its existence, from giving humans their form to guiding creatures to their mates and sustaining them, and that His knowledge encompasses all of creation, past and future, without error or forgetfulness 20:49. This divine order extends to the very creation of the universe, with the heavens built with strength and vastness, and the earth spread out as a resting place, from which all things are created in pairs 51:47-49.

While Allah is the ultimate Provider, Islam places a significant emphasis on human effort and responsible stewardship of the provision granted. Believers are commanded to 2:267. This injunction, as Ibn Kathir clarifies, means spending from "pure, honest money" and prohibits giving from "evil and dishonest money," as Allah is pure and only accepts what is pure 2:267. Ma'arif-ul-Quran highlights that this verse implies an obligation to give from land produce (ushr) and emphasizes that charity should be from lawful earnings 2:267.

The Quran encourages generosity and warns against miserliness. Allah promises that whatever is spent in His cause, He will compensate it, for He is the best of providers. This compensation may be in this world or the Hereafter, or both, as Ma'arif-ul-Quran notes, drawing a parallel to the natural replenishment of water from wells 34:39. A Hadith narrated by Abu Hurayrah reinforces this by stating that two angels descend daily, one praying for blessing upon the generous and destruction upon the one who withholds Muslim 34:39. Another Hadith encourages spending, quoting Allah as saying, "Spend, I will spend on you". However, it is crucial that spending aligns with the Shari'ah; spending on wasteful or sinful activities does not carry a promise of divine return 34:39.

The story of Prophet Yusuf provides a powerful example of prudent management of resources. His advice to 12:47 and to prepare for the subsequent seven difficult years then will come after that seven difficult [years which will...](12:48), illustrates foresight and planning in managing provision. Ibn Kathir explains that leaving grain in the ear helps preserve it longer, advocating against extravagance during times of abundance 12:47. This wisdom in governance allowed Yusuf to effectively manage the famine that struck Egypt and surrounding areas, including his homeland of Canaan 12:58. The jurists derive from this event that "should the economic condition of a country worsen to the limit that the failure of the government to check the decline may cause people to become deprived of the basic necessities of life, then, the government is justified in taking over the regulation and control of such supplies and it could also fix an appropriate price of food grains" (Ma'arif-ul-Quran, 12:62).

Islam discourages excessive attachment to worldly possessions and highlights the transient nature of material provision. The Quran admonishes believers: 20:131 categories of them, its being but the splendor of worldly life by which We test them. And the provision of your Lord is better and more enduring]. This verse serves as a reminder that worldly wealth and luxury are fleeting and do not necessarily indicate Allah's favor.

The Prophet Muhammad (ﷺ) exemplified abstinence from worldly luxuries despite having the means. `Umar bin Al-Khattab's observation of the Prophet's simple living, contrasting with the opulence of Persian and Byzantine kings, led the Prophet to explain that such worldly splendor is merely a hastened good for disbelievers in this life, with no share in the Hereafter 20:131. He further warned, "Verily, the thing I fear most for you all is what Allah will allow you to acquire of the splendor of this world" (Ibn Kathir, 20:131). This indicates that abundant provision can be a trial, potentially distracting believers from their ultimate purpose.

Contentment (qana'ah) with what Allah has provided is a highly praised quality. The Prophet (ﷺ) prayed for his family: "O Allah, make for the family of Muhammad the provision which is a bare subsistence" Muslim 55:24 or "adequate means to meet the needs" Muslim 55:26. Aisha reported that the Prophet's family never ate their fill of wheat bread for three successive nights until his death (Muslim 55:27, 55:28, 55:30). This illustrates a life of moderation and non-attachment to excess, emphasizing that spiritual richness is far superior to material abundance. A Hadith states that Allah says, "O son of Adam! Busy yourself in worshipping Me, and I will fill your chest with riches and dissipate your meekness. Otherwise, I will fill your chest with distracting affairs and will not do away with your meekness" (Ibn Kathir, 51:58; At-Tirmidhi, Ibn Majah, 20:131).

The concept of rizq extends significantly to the Hereafter, where believers will receive eternal and undiminishing provision. The dwellers of Paradise will have their provision therein, morning and afternoon. Tafsir Ibn Kathir explains this as continuous sustenance in a rhythm akin to morning and evening, signifying everlasting delight rather than literal day and night 19:62. Indeed, Allah states regarding the provision of Paradise, Indeed, this is Our provision; for it there is no depletion.

The path to this ultimate provision is through faith and righteous deeds, coupled with taqwa (God-fearing piety). Allah promises that those who believe and perform righteous deeds will enter Paradise and "will not be wronged in aught" 19:60. The righteous are described as those who "used to sleep but little at night" in worship and sought forgiveness in the hours before dawn 51:20. They are also characterized by their charity, allocating a designated portion of their wealth for the needy, whether "the poor who begs others" (Sa'il) or "the poor person who does not receive a stipend" and whose condition is not known (Mahrum) 51:20.

Moreover, true guidance, a form of spiritual provision, is reserved for the God-fearing. The Quran is a guidance for the God-fearing, and Tafsir Ibn Kathir notes that hidayah (correct guidance) is only granted to those with taqwa 2:2. Umar bin Al-Khattab's analogy of navigating a thorny path exemplifies taqwa: "I rolled up my sleeves and struggled. Ubayy said, 'That is Taqwa'" (Ibn Kathir, 2:2). This signifies refraining from prohibitions and observing Allah's commands, ultimately leading to freedom from sorrow and anxiety in this world and the next 2:39.

In essence, rizq is not merely what sustains the body, but everything that nurtures the soul and ensures ultimate success. It teaches dependence on Allah, responsible management, generous sharing, and prioritizing the eternal over the ephemeral.