سنن ابن ماجه

It was narrated from ‘Abdullah bin Mas’ud that the Messenger of Allah (ﷺ) said: “There is no (permissible) envy except in two cases: A man whom Allah has given wealth and caused him to dispose of it in a proper manner, and a man to whom Allah has given wisdom, and he acts in accordance with it and teaches it (to others).”