For Marriage
You will have a bitter life full of anxieties. Do not do it, or you will regret it.
For Business / Deal
You will suffer loss and damages, and your credit/reputation will be questioned. Do not proceed.
وَلَقَدْ خَلَقْنَا الْإِنسَانَ وَنَعْلَمُ مَا تُوَسْوِسُ بِهِ نَفْسُهُ ۖ وَنَحْنُ أَقْرَبُ إِلَيْهِ مِنْ حَبْلِ الْوَرِيدِ
Walaqad khalaqna alinsana wanaAAlamu ma tuwaswisu bihi nafsuhu wanahnu aqrabu ilayhi min habli alwareedi
It was We Who created man, and We know what dark suggestions his soul makes to him: for We are nearer to him than (his) jugular vein.
