Islamic Interpretation of Dreams (Ibn-i Sirin):

(Lie; Repose) In a dream, if a man sees himselflying on his back over the floor, it means having good strength, or gaining one.

It also means winning worldly profits, or expansion of one’s control.

Ifone sees himself lying on his back on the floor with his mouth open and bread loaves coming out of his mouth, it means that he will lose control over his business, meanwhile, he may win something totally different.