Hazrat Ibn Abi Nuaim (may Allah have mercy on him) narrates that I was sitting with Hazrat Ibn Umar (may Allah be pleased with them) when a man came and asked a question regarding the blood of a mosquito. So Hazrat Ibn Umar (may Allah be pleased with them) said to him: "Where are you from?" He replied: "I am from the people of Iraq." Upon this, Hazrat Ibn Umar (may Allah be pleased with them) said: "Oh! People, look at him, he is asking me about the blood of a mosquito, whereas these people killed the son of the Messenger of Allah (peace and blessings be upon him)! And I heard the Messenger of Allah (peace and blessings be upon him) say: 'They both are my flowers of this world.'"