For Marriage
It is very bad and will lead to divorce and separation. Do not proceed at all.
For Business / Deal
It carries both financial risk and a risk to your reputation. Definitely abandon it.
۞ بَرَاءَةٌ مِّنَ اللَّهِ وَرَسُولِهِ إِلَى الَّذِينَ عَاهَدتُّم مِّنَ الْمُشْرِكِينَ
Baraatun mina Allahi warasoolihi ila allatheena AAahadtum mina almushrikeena
A (declaration) of immunity from Allah and His Messenger, to those of the Pagans with whom ye have contracted mutual alliances:-
