Some of the wise people said: Whoever is given knowledge (of the religion) and knowledge of the Qur’aan, then it is incumbent that he is 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 of the worldly riches; for indeed he has been given better than what has been given to the people of the worldly riches. That is because Allaah (The Most High) called the worldly life ‘A Short Enjoyment; so He said: [قُلۡ مَتَـٰعُ ٱلدُّنۡيَا قَلِيلٌ۬ -Say: “Short is the enjoyment of this world]; and He called knowledge and the Qur’aan [خَيۡرً۬ا ڪَثِيرً۬ا‌ۗ- Abundant good]

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