For Marriage
Do not proceed at all; you will get entangled and spend a lifetime in regret and sorrow.
For Business / Deal
You will see much loss and damages; definitely abandon it.
قَالَ يَا قَوْمِ أَرَأَيْتُمْ إِن كُنتُ عَلَىٰ بَيِّنَةٍ مِّن رَّبِّي وَآتَانِي مِنْهُ رَحْمَةً فَمَن يَنصُرُنِي مِنَ اللَّهِ إِنْ عَصَيْتُهُ ۖ فَمَا تَزِيدُونَنِي غَيْرَ تَخْسِيرٍ
Qala ya qawmi araaytum in kuntu AAala bayyinatin min rabbee waatanee minhu rahmatan faman yansurunee mina Allahi in AAasaytuhu fama tazeedoonanee ghayra takhseerin
He said: "O my people! do ye see? if I have a Clear (Sign) from my Lord and He hath sent Mercy unto me from Himself,- who then can help me against Allah if I were to disobey Him? What then would ye add to my (portion) but perdition?
