here. This five-storey mural was commissioned by the Iranian Government in 2008.
As this article points out, the tradition of depicting Mohammad in human form 'is common in Shia Iran, where until recently postcards, pictures and even carpets depicting the prophet could be found on sale.'
POSTSCRIPT: Below is a postcard on sale in Iran in 2001. Prophet holding the Quran. Source. CORRECTION despite what the source says this is not an image of the Prophet. It is an image of Imam Ali ibn abi Talib.