Al-Ghazzali addresses the necessity of enjoining good (amr al-maruf) and forbidding wrong (nahy an al-munkar), the conditions of safeguarding public morality, the fear of the consequences that may occur to oneself from trying to safeguard public morality, the rules of conduct for the guardian of public morality and objectionable acts that are common in custom. This selection is Book XIX of Part Two of the Alchemy of Happiness entitled On Mutual Relations.