For Marriage
If performed, you will suffer for a lifetime and will have no way out.
For Business / Deal
You will suffer a massive loss; definitely abandon it.
وَلَوْ أَنَّ لِكُلِّ نَفْسٍ ظَلَمَتْ مَا فِي الْأَرْضِ لَافْتَدَتْ بِهِ ۗ وَأَسَرُّوا النَّدَامَةَ لَمَّا رَأَوُا الْعَذَابَ ۖ وَقُضِيَ بَيْنَهُم بِالْقِسْطِ ۚ وَهُمْ لَا يُظْلَمُونَ
Walaw anna likulli nafsin thalamat ma fee alardi laiftadat bihi waasarroo alnnadamata lamma raawoo alAAathaba waqudiya baynahum bialqisti wahum la yuthlamoona
Every soul that hath sinned, if it possessed all that is on earth, would fain give it in ransom: They would declare (their) repentance when they see the penalty: but the judgment between them will be with justice, and no wrong will be done unto them.
