But those who had been given knowledge said, "Woe to you! The reward of Allāh is better for he who believes and does righteousness. And none are granted it except the patient."
How Qarun went forth in His Finery, and His People's Comments
Allah tells us how Qarun went forth one day before his people with his magnificent regalia; wearing his fine clothes, accompanied by his fine horses, his servants and retinue. When those whose desires and inclinations were for the world saw his adornments and splendor, they wished that they could have the same as he had been given, and said:
(Ah, would that we had the like of what Qarun has been given! Verily, he is the owner of a great fortune.) meaning, `he is very lucky and has a great share in this world.' When the people of beneficial knowledge heard this, they said to them:
وَقَالَ الَّذِينَ أُوتُوا الْعِلْمَ وَيْلَكُمْ (And said those who were given knowledge - 28:80). This verse has compared the knowledgeable persons with الَّذِينَ يُرِيدُونَ الْحَيَاةَ الدُّنْيَا (Those who are desirous of the worldly life - 28:79), which clearly indicates that it is not the trait of knowledgeable persons to aspire for the acquisition of wealth and to make it the object of life. They always keep their eyes toward the lasting benefits of the Hereafter. As for the mundane wealth, they take it only to fulfill their day-to-day needs, and stay content with that.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 80–81
All the glamour of the world gathers around a person who possesses wealth. Seeing this, many foolish persons envy his lot. But those who possess real knowledge are quick to realize that this glamour is ephemeral, and that something so unenduring has no value. Knowledge of reality is the most valuable thing in this world. But to acquire this knowledge, one must have the patience to mould one’s mind without being influenced by external pressures, and while forming one’s opinion to ignore things of temporary charm. This is of course the most difficult type of patience to exercise, but after passing this crucial test, man is rewarded with the precious attributes of knowledge and wisdom.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.