Some of the wise people said: Whoever is given knowledge (of the religion) and knowledge of the Qur’aan, then it is obligated (on him to be) aware of himself. He does not lower himself to the people of the Dunya (i.e. those with worldly riches) due to what they possess; for indeed he has been given better than what has been given to the people of the dunyah. That is because Allaah (The Most High) referred to the worldly life as ‘A Short Enjoyment, saying: [قُلۡ مَتَـٰعُ ٱلدُّنۡيَا قَلِيلٌ۬ – Say: Short is the enjoyment of this world] and He referred to knowledge and the Qur’aan as [خَيۡرً۬ا ڪَثِيرً۬ا‌ۗ- Abundant good].

[Source: Al-Jaami Li-Ahkaam Al-Qur’aan of Imaam Qurtubi (rahimahullaah) 3/331]