One of the living things that are considered dirty and cause various diseases is a fly. Indeed, animals created by Allah Ta'ala is often perch in a place that dirty and germicidal. Nevertheless, flies include animals mentioned in the Qur'an or hadith.
Then is there a huge benefit until the fly is mentioned in the holy book? Or is there any wisdom behind his creation?
Know that flies or in Arabic are called "Adz Dzubab" mentioned in the Qur'an and one of them is contained in the letter of Al Hajj verse 73.
"O mankind, a parable has been made, so listen to the parable. Verily, whatever you call besides Allah can not create a fly. Although they are united to make it. And if the fly robs them of something, they can not recover it from the fly. It is weak that is worshiped and very weak (also) worshiped. "(Surat al-Hajj 73)
When examined in that verse Allah calls humans to bertauhid and leave kesyirikan. God deliberately shows one of his beings where idols and worshipers are unable to make it.
Besides, Allah also makes the parable to humiliate idols and worshipers where flies are stronger to keep something that he has taken so that the idolaters and idols themselves can not take it back.
"Created with a fly is a good thing in Arabic, because it can get closer to understanding." Said Sheikh Abu Bakar Al Jaza'iri.
Nevertheless, God is not careless in making imagery and surely there is more value that makes these slovenly animals in the Qur'an. There have been many verses that tell how God swears in the name of His creation as the sun and moon as a form of God's majesty. And indeed God's creation has a tremendous impact on life.
Flies become very unique especially when they find the animal is in the hadith of the Prophet. One of the uniqueness is the two different sides where in the one he has the poison, but on the other there is a bidder for the poison.
From Abu Huraira, the Messenger of Allaah (peace and blessings of Allaah be upon him) said: "If a fly falls in one of you drink, then immerse him, then let go, for on one wing there is disease and on the other there is medicine (bidder) . "(Bukhari)
For people who are concerned with reason, the hadith conveyed by the Prophet is very unreasonable. How could a dirty fly should be buried in a drink, would not it be more disgusted?