For Marriage
If you do it, you will regret it so much that there will be no way forward or backward.
For Business / Deal
Do not be superficial; you will suffer a great loss. Withdraw from performing it.
إِنَّ الَّذِينَ كَفَرُوا لَن تُغْنِيَ عَنْهُمْ أَمْوَالُهُمْ وَلَا أَوْلَادُهُم مِّنَ اللَّهِ شَيْئًا ۖ وَأُولَٰئِكَ أَصْحَابُ النَّارِ ۚ هُمْ فِيهَا خَالِدُونَ
Inna allatheena kafaroo lan tughniya AAanhum amwaluhum wala awladuhum mina Allahi shayan waolaika ashabu alnnari hum feeha khalidoona
Those who reject Faith,- neither their possessions nor their (numerous) progeny will avail them aught against Allah: They will be companions of the Fire,-dwelling therein (for ever).