Imām al-Ḥaddād said,

"It is strange how you can observe the ignorant and deluded person tirelessly pursuing the world, night and day, avidly desiring it, most careful in amassing, guarding, and enjoying it, then coming up with numerous excuses for doing this, while remaining ignorant of his religion, never having sought knowledge and never having sat with a scholar to learn from him.

When someone remonstrates with him about it, he justifies himself with such arguments as lack of free time and excessive occupation, all of which leads to his falling from the sight of God. For God - may He be praised - has made it easy for him to seek knowledge, for scholars abound and the effort required to learn the obligatory amount is insignificant, contrary to the affairs of this world where even small gains require strenuous efforts and enduring hardships.

The cause of this is but death of the heart, the little consideration according to religion, and the carelessness with which things of the hereafter are taken. Such a person sees his need for the things of this world ever present before his eyes, while his need for knowledge is absent and remote from his mind, for he will only need it and recognize its benefits after he dies.

But he has forgotten death and what comes after it, overcome as he is by his ignorance and lack of knowledge. Such a person is one about whom God - Exalted is He - says:

"But most people to not know. They know some appearance of the life of this world, but of the hereafter they are forgetful. [Qurʾān, 30:6,7]""

(Counsels of Religion; Translated by Mostafa al-Badawi)