Rizq is the necessities of life that Allâh Ta‘âlâ provides to the living creatures to sustain their lives. However, one chooses to earn their Rizq, with their own free will, by either permissible or prohibited means and Allâh Ta‘âlâ provides it in accordance with their own choice. Therefore, if one chooses to receive their Rizq through prohibited means, they are fully responsible for misusing their free will (and thus committed sin).
Seeking Halal means to earn sustenance so you do not beg people or you are not in need of anyone is a Fard (obligatory) deed that comes next after the other Fard Ibâdahs (acts of worship). The intention while seeking sustenance should not be accumulating wealth. The prophets (alayhimus salâm) would earn their livelihood through some crafts or some other permissible occupations.
It is Sunnah to seek one’s Rizq in the early hours of the morning. In this regard, Rasûlullâh (sallallâhu alayhi wa sallam) said: “Begin to seek Rizq early in the morning for there are Barakah (blessing) and success in the morning.”
While seeking Rizq, Muslims should not resort to the means that may cause them to neglect Dhikrullâh (remembrance of Allâh) or the Akhirah (hereafter), and they should not be too greedy which could affect their Warâ‘ (abstinence of the Haram).
The sustenance that Allâh Ta‘âlâ had decreed will not increase through greed. Rasûlullâh (sallallâhu alayhi wa sallam) said: “Verily Rizq follows and finds a person just as his appointed time of death does.”
In the first verse of Sûrah al-Mutaffifin, Allâh Ta‘âlâ says: “Woe to the defrauders!”
Muslims should not deceive people at trade deals. Besides, they should not take oaths, whether truly of falsely, to sell their goods. They should never attempt to cheat in their trades and not mix any Haram into their earnings. They should not hide the faults of their goods from their customers.