Al-Baqarah 2:235 ولا جناح عليكم فيما عرضتم به من خطبة النساء او اكننتم في انفسكم علم الله انكم ستذكرونهن ولاكن لا تواعدوهن سرا الا ان تقولوا قولا معروفا ولا تعزموا عقدة النكاح حتى يبلغ الكتاب اجله واعلموا ان الله يعلم ما في انفسكم فاحذروه واعلموا ان الله غفور حليم ٢٣٥

There is no sin for you in that which ye proclaim or hide in your minds concerning your troth with women. Allah knoweth that ye will remember them. But plight not your troth with women except by uttering a recognised form of words. And do not consummate the marriage until (the term) prescribed is run. Know that Allah knoweth what is in your minds, so beware of Him; and know that Allah is Forgiving, Clement.

There is no blame upon you for that to which you [indirectly] allude concerning a proposal to women or for what you conceal within yourselves. Allāh knows that you will have them in mind. But do not promise them secretly except for saying a proper saying. And do not determine to undertake a marriage contract until the decreed period¹ reaches its end. And know that Allāh knows what is within yourselves, so beware of Him. And know that Allāh is Forgiving and Forbearing.

There is no blame on you if ye make an offer of betrothal or hold it in your hearts. Allah knows that ye cherish them in your hearts: But do not make a secret contract with them except in terms Honourable, nor resolve on the tie of marriage till the term prescribed is fulfilled. And know that Allah Knoweth what is in your hearts, and take heed of Him; and know that Allah is Oft-forgiving, Most Forbearing.