"You shouldn’t speak like this; you are nervous and the ISIL (the Islamic State of Iraq and the Levant) is its cause since you have helped it and now it has turned into a problem," Larijani said, addressing Cameron in a ceremony in Tehran on Saturday.
Stressing that fearing a heinous group like the ISIL is a true fear, he said the British officials who need Iran in their fight against the terrorist group shouldn’t speak like "Pharaohs" and use orders to meet their needs.
"Instead of admitting to your past mistakes in aiding the terrorists, you are now using a language which will not lead to meeting your needs," Larijani said.
In relevant remarks on Thursday, Iranian Foreign Ministry Spokeswoman Marziyeh Afkham said that the recent statements by Cameron at his UN General Assembly speech indicated the continuation of Londons self-centered outlooks.
Afkhams comments came after Camerons speech at the 69th session of the UN General Assembly on Wednesday about the fight against the ISIL terrorist group in Iraq in which he raised anti-Iran allegations.