It is narrated from Sayyiduna Ali (may Allah be pleased with him) that we were with the Messenger of Allah (peace and blessings be upon him) at a funeral. On that occasion, the Prophet (peace and blessings be upon him) said: "Who among you will go to Madinah and not leave any idol there without breaking it, not leave any grave without leveling it, and not see any picture without smearing it with mud and clay?" A man stood up and said: "O Messenger of Allah! I will do this." So that man set out, but when he reached Madinah, he was overawed by the people of Madinah and returned. Seeing this, Sayyiduna Ali (may Allah be pleased with him) said: "O Messenger of Allah! I will go." The Prophet (peace and blessings be upon him) gave him permission. So when he returned, he said: "O Messenger of Allah! Wherever I found any kind of idol, I broke it; every grave I saw, I leveled it; and every picture I saw, I smeared it with mud." After this, the Prophet (peace and blessings be upon him) said: "Now, whoever does any of these things again, it is as if he denies the revelation sent down upon Muhammad (peace and blessings be upon him)." He also said: "O Ali! Do not become one who puts people into trial or one who boasts, but be only a trader of goodness, for these are the people who can only surpass others through deeds."