وَلاَ جُنَاحَ عَلَيْكُمْ فِيمَا عَرَّضْتُم بِهِ مِنْ خِطْبَةِ النِّسَاء أَوْ أَكْنَنتُمْ فِي أَنفُسِكُمْ عَلِمَ اللّهُ أَنَّكُمْ سَتَذْكُرُونَهُنَّ وَلَـكِن لاَّ تُوَاعِدُوهُنَّ سِرًّا إِلاَّ أَن تَقُولُواْ قَوْلاً مَّعْرُوفًا وَلاَ تَعْزِمُواْ عُقْدَةَ النِّكَاحِ حَتَّىَ يَبْلُغَ الْكِتَابُ أَجَلَهُ وَاعْلَمُواْ أَنَّ اللّهَ يَعْلَمُ مَا فِي أَنفُسِكُمْ فَاحْذَرُوهُ وَاعْلَمُواْ أَنَّ اللّهَ غَفُورٌ حَلِيمٌ
[2:235]
And there is no blame on you respecting that which you speak indirectly in the asking of (such) women in marriage or keep (the proposal) concealed within your minds; Allah knows that you win mention them, but do not give them a promise in secret unless you speak in a lawful manner, and do not confirm the marriage tie until the writing is fulfilled, and know that Allah knows what is in your minds, therefore beware of Him, and know that Allah is Forgiving, 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.
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.