أَعْطِ حَكِيمًا فَيَكُونَ أَوْفَرَ حِكْمَةً. عَلِّمْ صِدِّيقًا فَيَزْدَادَ عِلْمًا.
Give instruction to a wise man, and he will be yet wiser: teach a just man, and he will increase in learning.