The State of the body
The second of the four areas into which the theory of medicine is divided is concerned with the theory of the state of the body of man.
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There are three states of the body that are possible: health, disease, and a condition which is neither health nor disease, that is convalescence and old age.
Now, health is a physical condition in which all the functions are healthy. Being restored to good health is the best gift of Allah to man. It is impossible to act rightly and to pay proper attention to the obedience which is due to our Lord except when health is present. There is nothing like it. Let the worshipper give thanks for his health and never be ungrateful.
The Prophet said, may Allah bless him and grant him peace, "There are two gifts of which many men are cheated - good health and leisure." Al-Bukhari transmitted this hadith.
The Prophet said, may Allah bless him and grant him peace,
"There are worshippers of Allah whom He protects from death in battle and from sickness. He makes them live in good health and die in good health, and yet He grants them the stations of His martyrs."
Abu-d-Darda said, "O Prophet, if I am cured of my sickness and am thankful for it, is it better than if I were sick and bore it patiently?" And the Prophet, may Allah bless him and grant him peace, replied, 'Truly the Prophet loves good health, just as you do."
It has been related that at-Tirmidhi said, "The Prophet, may Allah bless him and grant him peace, said, 'Whoever awakes in the morning with a healthy body, and a self that is sound, and whose provision is assured, he is like the one who possesses the whole world."
Again, at-Tirmidhi has related that Abu Huraira said that the Prophet, may Allah bless him and grant him peace, said, The first question that is put to the worshipper on the Day of Rising about the pleasure of this world is: 'Did I not give you a healthy body?
And the next is: 'Did I not satisfy you with cool water?""
And again, he has also related that the Prophet, may Allah bless him and grant him peace, said, "O' Abbas, ask Allah for health in this world and in the next." Al-Bazar reports this hadith.
The Prophet, may Allah bless him and grant him peace, also said, "Ask Allah for forgiveness and health. After certainty of faith, nothing better is given to a man than good health." This has been transmitted by an-Nasa'i.
"No supplication is more pleasing to Allah than a request for good health," is a hadith related by at-Tirmidhi.
A certain bedouin once questioned the Prophet, may Allah bless him and grant him peace, saying, "O Prophet of Allah, what supplication shall I make to Allah after I have finished doing the prayer?" And he replied, "Ask for good health."
Among the wise sayings of the Prophet Daw'ud, peace be on him, are the following: "Health is a hidden kingdom." And again, "Sadness for one hour ages a man by one year." And again, "Health is a crown on the heads of the healthy that only the sick can see." And again, "Health is an invisible luxury."
Some of our ancestors used to say, "How many rich gifts Allah has placed beneath every vein." And may Allah indeed give us health in the deen in this life and in the next.
As for disease, it is a state that is just the opposite of this. It arises from need, or from wrong action, or from misfortune.