The body of Pharaoh or 3116 years was under the water, but it still remains the same as before and why did it not get any type of decay?

In the Koran, Pharaoh has died, and his body will remain intact even after death, as a warning to the next transgressors. "We passed the river of the Israelites to Israel, and Pharaoh and his army pursued them with insolence and excesses, even when they began to drown, they said," Now I believe that there is no god except those whom the Children of Israel worshiped. " Therefore, today I am protecting your body so that it may be a sign for your successors. Undoubtedly, many people look at my power. Not on. " (Surah Yunus: 92). In the Holy Qur'an Allah Subhan ta'ala Ershad said, "Pharaoh has died, and his body will be kept intact, even after death, as a warning to the later transgressors." I crossed the river of Israel, and then Pharaoh and his army followed them, mischief And when he started to drown, he said, "Now I believe that there is no god except he Israelites to worship. Therefore, today I am protecting your body so that it may be a sign for your successors. Most people do not look at my power. "(Surah Yunus: 92). Historians saved Pharaoh's body in 1898. Which is now in Cairo, in a corridor of the Royal Mummy in Cairo, Egypt. Its length is 202 centimeters. Despite being under water for 3116 years, there is no decomposition in his body. The Arab nation and the Egyptians of the era of Muhammad (peace be upon them) were immersed in Pharaoh's water or the bodies of the Egyptians - this is a unique sign for the Muslim community and the community of the whole world. The dead body of Pharaoh is known in 1881 in the valley of a river of Egypt (in the middle of the mountain, by which the river flows). But, Allah Almighty mentions the events of Pharaoh in the holy Quran 1400 years ago. According to historians, when the body of Pharaoh was found, the body was about 3,000 years old. Prophet Moses (peace be upon him) invited the sinful Pharaoh many times to Islam; But the worst, the worst Pharaoh of the world, did not respond to the call of Prophet Moses (peace be upon him) but rather exceeded the limits of tyranny and oppression. Then, when the life of the tyranny of the oppressor is over, Allah Almighty drowned the disobedient in the river and preserved his dead body for the humanity. Allah Almighty says, "Now I will save only your body so that you may be a signatory for the later generations. Although there are many people who are indifferent to my signs. "(Sura Yunus: Verse 92) Allah said in a different place about Pharaoh's fearsome situation:" This is a message for all mankind, and it has been sent so that it may warn them. And they may know that Allah is the only one who is wise and thinks of them "(Surah Ibrahim: Ayat-52) so Eraunera successor, who is currently lousy show their power, they must learn from history. Just as God has preserved Pharaoh's body as a symbol for humanity, it is possible to preserve the deeds and attributes of the wrongdoers and present it as a sign for present and future times. May God guide us in a straight path and give strength to fight against the followers of Pharaoh. Amin