The Most Just Among Judges
If he sincerely obeys and worships Allah, every matter that he hates will be good for him; but if he abandons obedience and worship, every matter that he loves will be evil and bad for him.
Whoever truly knows Allah, His Names and His Attributes, will surely know that any distress or harm that has happened to him bears interest and benefits that his mind cannot comprehend…
Loving parents do the same to their children because they understand the benefits. Sometimes the cure for the child is painful, but the parent will still do it and all this will be done the sake of mercy and pity.
Perhaps the parent will perceive some benefit for the child by not financing him, so he will not give to him, because he knows that these are the important causes of decay. He also prevents him from many pleasures in order to protect him.
The Most Just among judges, the Most Merciful among those who are merciful, and the Most Knowledgeable among those who have knowledge, who is more merciful to His servants than themselves, their fathers, and their mothers, if He allows them to be inflicted with evil, that will be better for them than not inflicting them. If they had the chance to choose for themselves, they would never be able to benefit by it.
However, Allah, the Exalted, manages their lives according to His knowledge, wisdom, and mercy…
Only those who know and believe in His Names and Attributes do not accuse Him or doubt one of His judgments but only those who do not know His Names and Attributes argue with Him about His judgments and doubt His Wisdom and fail to submit to His judgment.
They even oppose it with their spoiled minds, false opinions and unjust policies. They neither knew their Lord, or obtain any benefit.
Whenever a servant has this knowledge, he will live in a Paradise on earth before he enters the Paradise of the Hereafter. He will be satisfied and pleased with his Lord and will be satisfied with the paradise in this worldly life.
The servant will be pleased with whatever happens to him because he knows that it has been chosen by Allah and this is acceptance of Allah as his Lord, Islam as his religion, and Muhammad (sallallaahu alayhi wa sallam) as his Messenger.
The one who is not able to do this will never taste the sweetness of faith.
This pleasure depends upon how much he comprehends the justice of Allah, His Wisdom, Mercy and Good Choice.The more he knows, the more pleasure and satisfaction he will have. Allah judges his servants according to justice, benefit, wisdom and mercy.
Source: Ibn al-Qayyim, Al-Fawaa’id