Gog and Magog (Yajuj and majuj):

Gog and Magog were the nation in ancient history but according to the Islamic commandments it still exist in the world. Gog and Magog were the uncivilized, barbaric, wild and nonreligious people.

The early traditions were summarized by al-Qazwini (death 1283) in two popular works called the Cosmography and the Geography. Gog and Magog are a people who can be counted only by God, only half the height of a normal man, with claws instead of nails and a hairy tail. They have huge hairy ears, which they use as mattress and cover for sleeping. Their land was explored by "The Two-Horned One," who found them living near to the sea that encircles the Earth.

But there is not any authentic reference about their appearance.

Statement by an Islamic lecturer:

Sheikh M. S. Al-Munajjid, a prominent Saudi Muslim lecturer and author, states:

"Gog and Magog are two disbelieving tribes from among the sons of Adam. They used to spread mischief on earth, so Allah gave Dhul-Qarnayn the power to build a barrier to detain them. They will keep on digging at it until Allah gives them permission to come out at the end of time, after Hazrat Isah (peace be upon him) has killed the Dajjal. They will emerge in huge numbers and will drink up the lake of Tiberius (in Palestine). They will spread mischief on earth and no one will be able to resist them. Hazrat Isah (peace be upon him) and the believers with him will take refuge in Mount Tur until Allah destroys Ya'juj and Ma'juj by sending worms that will eat their necks. Then Allah will send rain to wash away their bodies into the sea and cleanse the earth of their stench."

Gog and Magog in Hadith:

Abu Hurayrah (may Allah be pleased with him) reports that the Prophet (peace and blessings be upon him) said:

"Every day, Gog and Magog try to dig a way out through the barrier. When they begin to see sunlight through it, the one who is in charge of them says, "Go back; you can carry on digging tomorrow, " and when they come back, the barrier becomes stronger than it was before. This will continue until their time comesand Allah wishes to send them forth. They will dig until they begin to see sunlight, then the one who is in charge of them will say, "Go back; you can carry on digging tomorrow,In sha'Allah."

In this case, he will make an exception by saying In sha Allah, thus relating the matter to the Will of Allah. They will return on the following day, and find thehole exactly as they left it. They will carry on digging and come out against the people. They will drink all the water, and find the hole exactly as they left it, and the people will entrench themselves in their fortresses. Gog and Magog will fire their arrows into the sky, and they will fall back to earth with something like blood on them. Gog and Magog will say, "We have defeated the people of earth, and overcome the people of Heaven."Then Allah will send a kind of worm in the napes of their necks, and they will be killed by it.."By Him in Whose Hand the soul of Muhammad is, the beasts of the earth will become fat."

(Reported by At-Tirmidhi, Ibn Majah, and Ahmad)