And there is no sin on you if you make a hint of betrothal or conceal it in yourself, Allah knows that you will remember them, but do not make a promise of contract with them in secret except that you speak an honourable saying according to the Islamic law (e.g. you can say to her, "If one finds a wife like you, he will be happy"). And do not consummate the marriage until the term prescribed is fulfilled. And know that Allah knows what is in your minds, so fear Him. And know that Allah is Oft-Forgiving, Most Forbearing.