The hawk's swooping contributes to the sparrow's alertness and agility. Although rain, electricity, or fire sometimes harms people, no one curses them. Fasting may be difficult, but it provides the body with energy, activity, and resistance. A child's immune system usually gains strength through illness. Gymnastics are not easy, but they are almost essential to bodily health and strength. People's spirits are refined through worship and meditation as well as through illness, suffering, and hardship. These allow them to acquire Paradise, for God gives a large reward for a little sacrifice. Hardships and sufferings promote people to higher spiritual degrees, and will be returned manifold in the other world. This is why all Messengers experienced the most grievous hardships and sufferings.
Hardship, suffering, and calamity cause believers' sins to be forgiven, warn them away from sins and the seductions of Satan and the carnal self, help them appreciate God's blessings, and open the way to gratitude. Also, they urge the rich and healthy to be concerned about the ill and the poor and to help them. Those who have never suffered cannot understand the condition of those who are hungry, sick, or stricken with a calamity. In addition, these afflictions may help establish closer relations between different social sectors.
The role of intention in fasting
Intention has a prominent place in our actions, for God's Messenger told us that our actions are judged according to our intentions. Intention is the spirit of our actions, for without it there is no reward. If you remain hungry and thirsty from daybreak to sunset without intending to fast, God does not consider it a fast. If you fast without intending to obtain God's good pleasure, you receive no reward. So whatever one intends, one gets the reward thereof. Those who have a firm belief in God, the other pillars of faith, and the intention to believe in them will be rewarded with eternal felicity in Paradise. But those who are determined not to believe, who have removed the inborn tendency to believe from their hearts, will be victims of their eternal determination and deserve eternal punishment. As for those with deeply ingrained unbelief and who have lost the capacity to believe, we read in the Qur'an: As for the unbelievers, it is the same whether you warn them or warn them not. They will not believe. God has set a seal on their hearts and on their hearing, and on their eyes there is a covering (Baqara 2:6-7).
Favoring the Heart as Opposed to the Flesh
Human life is a composite of two distinct powers: the spirit and the flesh. Although they sometimes act in harmony, conflict is more usual—conflict in which one defeats the other. If bodily lusts are indulged, the spirit grows more powerless as it becomes more obedient to those lusts. If one can control the desires of the flesh, place the heart (the seat of spiritual intellect) over reason, and oppose bodily lusts, he or she acquires eternity.
Compared with previous centuries, people may well be wealthier and enjoy more convenience and comfort. However, they are trapped in greed, infatuation, addiction, need, and fantasy much more than ever before. The more they gratify their animal appetites, the more crazed they become to gratify those appetites; the more they drink, the thirstier they get; the more they eat, the hungrier they get. They enter into evil speculations to feed their greed to earn still more, and sell their spirits to Satan for the most banal advantages. And so they break with true human values a little more each day.
To sacrifice one's enjoyment of worldly pleasures has the same significance for human progress as roots have for a tree's growth. Just as a tree grows sound and strong in direct relation to its roots' soundness and strength, people grow to perfection whose striving to free themselves from selfishness so that they can live for others.
Spiritual practices during Ramadan
Muhasaba (Self-Criticism or Self-Interrogation)
Self-criticism may be described as seeking and discovering one's inner and spiritual depth, and exerting the necessary spiritual and intellectual effort to acquire true human values and to develop the sentiments that encourage and nourish them. This is how one distinguishes between good and bad, beneficial and harmful, and how one maintains an upright heart. Furthermore, it enables a believer to evaluate the present and prepare for the future. Again, self-criticism enables a believer to make amends for past mistakes and be absolved in the sight of God, for it provides a constant realization of self-renewal in one's inner world. Such a condition enables one to achieve a steady relationship with God, for this relationship depends on a believer's ability to live a spiritual life and remain aware of what takes place in his or her inner world. Success results in the preservation of one's celestial nature as a true human being, as well as the continual regeneration of one's inner senses and feelings.
Reflection is a vital step in becoming aware of what is going on around us and of drawing conclusions from it. It is a golden key to open the door of experience, a seedbed where the trees of truth are planted, and the opening of the pupil of the heart's eye. Due to this, the greatest representative of humanity, the foremost in reflection and all other virtues states: "No act of worship is as meritorious as reflection. So reflect on God's bounties and the works of His Power, but do not try to reflect on His Essence, for you will never be able to do that." By these words, in addition to pointing out the merit of reflection, the glory of humankind determines the limits of reflection and reminds us of our limits.
True thankfulness in one's heart is manifested through the conviction and acknowledgment that all bounties are from God, and then ordering one's life accordingly. One can thank God verbally and through one's daily life only if personally convinced, and if one willingly acknowledges that his or her existence, life, body, physical appearance, and all abilities and accomplishments are from God, as are all of the bounties obtained and consumed. This is stated in: Do you not see that God has made serviceable unto you whatsoever is in the skies and whatsoever is in the earth, and has loaded you with His bounties seen or unseen? (Luqman 31:20), and: He gives you of all that you ask Him; and if you reckon the bounties of God, you can never count them (Ibrahim 14:34).
Of course, one should try to increase in all virtues during Ramadan, as this is the best time of year to do so.
 Tabarani, Mu'jam al-Awsat, 6/250; Baykhaki, Shuab al-Iman, 1/136.