Wa masalul lazeena yunfiqoona amwaalahumub ti ghaaaa'a mardaatil laahi wa tasbeetam min anfusihim kamasali jannatim birabwatin asaabahaa waabilun fa aatat ukulahaa di'faini fa il lam yusibhaa waabilun fatall; wallaahu bimaa ta'maloona Baseer
And the example of those who spend their wealth seeking means to the approval of Allah and assuring [reward for] themselves is like a garden on high ground which is hit by a downpour - so it yields its fruits in double. And [even] if it is not hit by a downpour, then a drizzle [is sufficient]. And Allah, of what you do, is Seeing.