For Marriage
Proceed; it is a good case. Do not forget Sadaqah.
For Business / Deal
Insha'Allah, it will be highly profitable and beneficial, provided you do not forget Allah.
وَكَيْفَ تَكْفُرُونَ وَأَنتُمْ تُتْلَىٰ عَلَيْكُمْ آيَاتُ اللَّهِ وَفِيكُمْ رَسُولُهُ ۗ وَمَن يَعْتَصِم بِاللَّهِ فَقَدْ هُدِيَ إِلَىٰ صِرَاطٍ مُّسْتَقِيمٍ
Wakayfa takfuroona waantum tutla AAalaykum ayatu Allahi wafeekum rasooluhu waman yaAAtasim biAllahi faqad hudiya ila siratin mustaqeemin
And how would ye deny Faith while unto you are rehearsed the Signs of Allah, and among you Lives the Messenger? Whoever holds firmly to Allah will be shown a way that is straight.