Sahih Muslim Book 24, Hadith Number 5311.

Chapter : Prohibition of wearing the garment of falsehood.

‘Aisha 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.