For Marriage
It is very bad; do not do it at all, as you will deeply regret it.
For Business / Deal
Your counterparts are fraudsters; do not proceed with this transaction at all.
فَبِمَا نَقْضِهِم مِّيثَاقَهُمْ وَكُفْرِهِم بِآيَاتِ اللَّهِ وَقَتْلِهِمُ الْأَنبِيَاءَ بِغَيْرِ حَقٍّ وَقَوْلِهِمْ قُلُوبُنَا غُلْفٌ ۚ بَلْ طَبَعَ اللَّهُ عَلَيْهَا بِكُفْرِهِمْ فَلَا يُؤْمِنُونَ إِلَّا قَلِيلًا
Fabima naqdihim meethaqahum wakufrihim biayati Allahi waqatlihimu alanbiyaa bighayri haqqin waqawlihim quloobuna ghulfun bal tabaAAa Allahu AAalayha bikufrihim fala yuminoona illa qaleelan
(They have incurred divine displeasure): In that they broke their covenant; that they rejected the signs of Allah; that they slew the Messengers in defiance of right; that they said, "Our hearts are the wrappings (which preserve Allah's Word; We need no more)";- Nay, Allah hath set the seal on their hearts for their blasphemy, and little is it they believe;-
