Insulting or disrespecting other religions and their sacred figures and places is a broad and significant subject in Shi‘a jurisprudence. The question often arises as to whether insulting sanctities is legally prohibited or not. Using the Qur’an and hadith as sources, this article—an abridged transcript of Ayatullāh Lankarani’s lecture— clarifies the meaning of insult, and covers the consensus in Shi‘a jurisprudence with regards to the prohibition of insult to divine hurumāt (sanctities), that is, God, angels, prophets, the Qur’an, divine books, mosques, temples, and shrines.