Imam Ali (A.S.)

أَيُّهَا النَّاسُ اعْلَمُوا أَنَّ كَمَالَ الدِّينِ طَلَبُ الْعِلْمِ وَ الْعَمَلُ بِهِ ألا وَ إِنَّ طَلَبَ الْعِلْمِ أَوْجَبُ عَلَيْكُمْ مِنْ طَلَبِ الْمَالِ

Surely the completion of one’s faith lies in seeking knowledge and putting it into practice, and know that seeking knowledge is much more essential for you than amassing wealth.

Bihar al-Anwar, vol. 1, pg. 175