Allah (SWT) says: “When the Word is fulfilled against them, We shall bring out from the earth a beast to them, which will speak to them because mankind believed not with certainty in Our Ayat”.
“Dabbah al-Ard will come forth from the crack. His face will be human, but with horns on his head; his body as a horse, his legs like a camel’s while his rump is of a deer, and his tail is of a cow. He will be 60 cubits tall. In one of his monkey hands he will hold the staff of Moses, and on the other hand he will wear the ring of Solomon. He will stride the Earth at great speed, and as he travels he will mark the forehead of believers with the staff of Moses [Mu’mim]. Their faces will then shine bright as the moon. But the unbelievers will be stamped with Solomon’s ring, and their faces will become black and horrible. Thus will the believers and unbelievers be distinguished. Then Dabbah al-Ard will disappear as suddenly as he manifested. Then Allah will hold the Day of Judgment.”