For Marriage
It is good. State all matters at the very beginning and proceed with Tawakkul (trust) in Allah.
For Business / Deal
Proceed with Tawakkul in Allah and by observing Sharia standards (Islamic guidelines); Insha'Allah, you will profit.
ذَٰلِكُمُ اللَّهُ رَبُّكُمْ ۖ لَا إِلَٰهَ إِلَّا هُوَ ۖ خَالِقُ كُلِّ شَيْءٍ فَاعْبُدُوهُ ۚ وَهُوَ عَلَىٰ كُلِّ شَيْءٍ وَكِيلٌ
Thalikumu Allahu rabbukum la ilaha illa huwa khaliqu kulli shayin faoAAbudoohu wahuwa AAala kulli shayin wakeelun
That is Allah, your Lord! there is no god but He, the Creator of all things: then worship ye Him: and He hath power to dispose of all affairs.
