Book 24, Number 5311:

A'isha reported that a woman said: Allah's Messenger, may I say to my (co-wife) that my husband has given me (such and such) a thing but which he has not in fact gives me? 'Thereupon Allah's Messenger (may peace be upon him) said: The one who makes a false statement of that which one has not been given is like one who wears a garment of falsehood.