For Marriage
Wait and do not hurry; a better case will be granted to you. Seek counsel (Mushawarah); it is better not to do it.
For Business / Deal
Consult with experts; it is not as good as it is described.
وَلَئِن مُّتُّمْ أَوْ قُتِلْتُمْ لَإِلَى اللَّهِ تُحْشَرُونَ
Walain muttum aw qutiltum laila Allahi tuhsharoona
And if ye die, or are slain, Lo! it is unto Allah that ye are brought together.
