For Marriage
Conflict and dispute are foreseen. Do not proceed.
For Business / Deal
You will not encounter good people; it is better not to do it.
وَقَالَ الَّذِينَ أَشْرَكُوا لَوْ شَاءَ اللَّهُ مَا عَبَدْنَا مِن دُونِهِ مِن شَيْءٍ نَّحْنُ وَلَا آبَاؤُنَا وَلَا حَرَّمْنَا مِن دُونِهِ مِن شَيْءٍ ۚ كَذَٰلِكَ فَعَلَ الَّذِينَ مِن قَبْلِهِمْ ۚ فَهَلْ عَلَى الرُّسُلِ إِلَّا الْبَلَاغُ الْمُبِينُ
Waqala allatheena ashrakoo law shaa Allahu ma AAabadna min doonihi min shayin nahnu wala abaona wala harramna min doonihi min shayin kathalika faAAala allatheena min qablihim fahal AAala alrrusuli illa albalaghu almubeenu
The worshippers of false gods say: "If Allah had so willed, we should not have worshipped aught but Him - neither we nor our fathers,- nor should we have prescribed prohibitions other than His." So did those who went before them. But what is the mission of messengers but to preach the Clear Message?