For Marriage
You will encounter problems you never even imagined and will regret it later, but it will be of no use. Abandon it.
For Business / Deal
You will encounter many problems, and they will deny/reject you. Abandon it.
وَإِن يُكَذِّبُوكَ فَقَدْ كُذِّبَتْ رُسُلٌ مِّن قَبْلِكَ ۚ وَإِلَى اللَّهِ تُرْجَعُ الْأُمُورُ
Wain yukaththibooka faqad kuththibat rusulun min qablika waila Allahi turjaAAu alomooru
And if they reject thee, so were messengers rejected before thee: to Allah back for decision all affairs.
