Plato in the Tymius

Plato in the Tymius says that matter and a receptacle are the same thing. For all philosophers affirm that place is something, but Plato alone has attempted to see what it is. We must however ask Plato if it be necessary to digress why forms and numbers are not in place. If place is capable of participating, whether that which can participate is the great and the small, or whether it's just matter as he has written in the timeus. Again, how could a thing be carried to its own place if place were matter or form?