What commandment is violated when you borrowed something from someobe and you promised to return it after a week, then when the person you borrowed asked you to return the thing you borrowed you just said a lie that you returned it and you said it because you were hoping that the person you borrowed forgets about it in order to use the thing longer without knowing that the person you borrowed that isn't yet returned. (Choices is 7th Commandment and 8th Commandment)