In a the interpretation of dreams in Islam, the human body represents his state, and its strength represents his faith in God Almighty. If one sees himself wearing the skin of a snake in a dream, it means that he will avow his enmity toward others. If one sees himself as a ram in a dream, it means that he will beget a son from whose success he will earn his livelihood.
If one sees his body turn into iron or clay in a dream, it means his death. If one's body appears bigger in a dream, it means that he will prosper accordingly. Having a fat body in a dream means prosperity and knowledge, and an emaciated body in a dream represents poverty and ignorance.
The body in a dream is what envelops and contains the human being. The body is like one's wife, a garment, a house, one's beloved, a child, a guardian, or a master. The health condition and strength of one's body in a dream may denote any of the elements mentioned here in. These meaning are about the body in general. You can also look the meaning in dream about the different parts of body in Islam.