Al-Amr bil-Ma‘roof wal-Nahi ‘An-il-Munkar
Ma‘roof (right) is every deed which the Shariah made obligatory or recommended, so if the command is one of obligation, enjoining others to do it becomes obligatory (wajib), and if the command is one of recommendation, enjoining others to do it becomes recommended (mustahab). Munkar (wrong, evil) is every deed which the Shariah did not accept, so it made it forbidden, or encouraged abstention from doing it, so if the deed is forbidden, forbidding it becomes obligatory and if it is recommended to abstain from it, forbidding it becomes recommended. But it must be noted that the recommendation of enjoining recommended deeds (mustahab) and forbidding the deeds that are recommended to abstain from (makruh) is conditional by this being safe from harm or humiliation, otherwise the enjoining or forbidding become forbidden.
Enjoining obligatory deeds and forbidding forbidden deeds are a kifa’i obligations that the person is relieved of when others attend to them. However, the act of enjoining or forbidding is not cancelled by carrying them out; rather the obligation stays as long as committing the forbidden deed or abandoning the obligatory deed continues.