Two Requirements for Knowledge
It is reported that Al-Sha’bî said, “The only people who used to seek this knowledge were those who combined two characteristics: intelligence and devout worship. If a person was intelligent but not devout, it would be said that only the worshippers can attain this [knowledge], and so he would not try to seek it. And if a person was devout, but not intelligent, it would be said that only the intelligent can attain this [knowledge], and so he would not try to seek it.” Al-Sha’bî continued, “And I fear that today, people who are neither intelligent nor devout try to seek it.”
Ibn Hibbân Al-Bustî, Rawdatu Al-‘Uqalâ` wa Nuzhatu Al-Fudalâ` Vol.1 p9.
Knowledge transforms the student
Al-Hasan Al-Basrî – Allah have mercy on him – said: When a man sought knowledge, it would not be long before it could be seen in his humbleness, his sight, upon his tongue and his hands, in his prayer, in his speech and in his disinterest (zuhd) in worldly allurements. And a man would acquire a portion of knowledge and put it into practice, and it would be better for him than the world and all it contains – if he owned it he would give it in exchange for the hereafter.
Ibn Al-Mubârak, Al-Zuhd wa Al-Raqâ`iq Vol.1 p.156.