But the case of (charity on the part of) those who spend their wealth seeking the good pleasure of Allâh and for their own consolidation and with firm faith, is like the case of a garden situated on a highly fertile land. It is hit by heavy rain so it yields its fruit manifold; but even if heavy rain does not hit it then a mere drizzle (is sufficient) for it. And Allâh sees well what you do. - Quran 2:265