Yechezkel 10:8-10

Orthodox Jewish Bible

⁸ And Keruvim appeared to have the tavnit (form) of a yad adam under their kenafayim (wings).

⁹ And when I looked, hinei, the four Ofanim (wheels) by the Keruvim, one Ofan beside one Keruv, and another Ofan beside another Keruv: and the appearance of the Ofanim was like the color of tarshish even (stone).

¹⁰ And as for their appearance, there was one demut (likeness) for the four of them, like that it was the Ofan within the Ofan.