It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them): «﴿إِنَّمَا يَخْشَى اللَّهَ مِنْ عِبَادِهِ الْعُلَمَاءُ﴾» [فاطر: 28/35] Whoever fears Allah is a scholar. Two greedy people are never satisfied: the seeker of knowledge and the seeker of the world.