Mukhtasar Bukhari

Narrated from Sayyida Asma (may Allah be pleased with her) that a woman asked, "O Messenger of Allah! I have a co-wife. If I show off to her that my husband gives me more than he actually does, just to make her jealous, will I be sinful?" The Prophet (peace be upon him) said: "The one who pretends to have been given what was not given to her (as a deception) is like someone who wears two garments of falsehood."