Hadith 5738
Sayyida Asma bint Abu Bakr (may Allah be pleased with her) narrates: A woman came to the service of the Prophet (peace be upon him) and said: O Messenger of Allah (peace be upon him), I have a co-wife. Will there be any sin on me if I show myself to be satisfied to my husband regarding something which he has not given me? The Prophet (peace be upon him) said: A person who shows himself to be satisfied regarding something which was not given to him is like one who wears two garments of falsehood.