What were the Prophet Muhammad's (peace be upon him) thoughts on the people of Iraq and their attitude towards the killing of flies in comparison to their behaviour towards his two beloved grandsons, Hasan and Husain (peace be upon them) ?
 Narrated Ibn Abi Nu'm:                     A person asked `Abdullah bin `Umar whether a Muslim could kill flies. I heard him saying (in reply). "The people of Iraq are asking about the killing of flies while they themselves murdered the son of the daughter of Allah's Apostle . The Prophet said, They (i.e. Hasan and Husain) are my two sweet basils in this world."