How to Achieve Reliance upon Allah in All Our Affairs

Question:
The questioner asks and says: I read many verses in the Qur'an that encourage reliance upon Allah. I ask how this reliance is to be in our lives? Please give examples of this.

Answer:
Reliance upon Allah is among the most important obligations for the believer. Allah the Exalted says: And He the Exalted says, "And if you rely upon your Lord, He is sufficient for you." And He the Majestic and Exalted says: So reliance upon Allah is among the most important acts of worship and the most obligatory acts of worship. It is entrusting matters to Allah, depending on Him, and trusting in Him the Exalted, while taking the means. You know that He is the cause of causes, the disposer of affairs, and that everything is in His hand, the Majestic and Exalted. There is no one who can prevent what He has given, and no one who can give what He has prevented. He is the Benefactor and the Harmer, the Giver and the Withholder. But along with this, you take the means that benefit you: you eat when hungry, drink when thirsty, get married, and earn lawful earnings through buying and selling or otherwise. You do not neglect the means. And while doing so, you rely on Allah, knowing that nothing will befall you except what Allah has decreed for you, and that you will not succeed except by His success and facilitation, Blessed and Exalted is He. So you reject [relying on] the means and act through the means, with trust in Allah and dependence on Him. You treat the sick while relying on Allah, knowing that He is the One who heals the sick. You treat him, consult the doctor, and do what the doctor says, such as giving him medicine, cauterizing him, or putting him on a diet, or the like. You buy and sell while relying on Allah, knowing that nothing will happen to you except what Allah has written for you.
You rent out the buildings you have to those who desire them from you to obtain the rent. You water your crops, you water your animals, you feed them so that you benefit from them, and you are relying upon Allah in everything. That is, you take the means in everything, with trust in Allah and reliance upon Him, and that He is the Creator of affairs and their Disposer, and He is the Benefactor and the Harmer, the Giver and the Permitter. And you only do the means that you are commanded to do.
Just as you travel for needs, for Hajj, for 'Umrah, for trade, taking the means, and you know that Allah the Exalted is the Creator, He is the One in whose hand is your arrival to Hajj, in whose hand is His helping you to perform the rituals of Hajj, in whose hand is His helping you in the farthest reaches of trade and returning from your journey, and the like. Yes. May Allah reward you with good.