Ayatollah Bashir al-Najafi made the remark in response to a request by the Sheikh of Egypt’s al-Azhar Islamic center for a ban on desecrating religious sanctities.
Al-Azhar’s Sheikh Ahmed al-Tayyeb made the call in a meeting with an Iranian envoy in Cairo.
Supreme Leader of the Islamic Revolution Ayatollah Seyyed Ali Khamenei issued a Fatwa (religious edict) a few years ago which bans insulting the Sunni sanctities.
The Fatwa was welcomed and praised by Sunni scholars in various countries.