O my son! The worst restlessness is disruption of intellect. The greatest sin is a sin against religion and the greatest calamity is the danger to faith and the most profitable wealth is the wealth of heart. So enrich your heart with knowledge, faith, good morality and rest content on whatever you get in this world. Remain pleased and happy on what Allah has fixed for you, because, whoever pilfers people’s property does not get legal and permissible provision as Allah stops it from him, as fixed by Him and such persons earn only sins. A man who is patient, gets halal (permissible) provision and he is protected from the chastisement of both this world and of the Hereafter.
O My son! Make your obedience pure and let it not be contaminated