Squirrels don’t realize the amazing properties of the acorns they hide in their nests in the trees. One little 20mm long acorn that accidentally falls to the ground and takes root can end up becoming a 35 metre tall, strong oak tree.
Similarly, we should never underestimate the small good we do as Muslims. A kind word to even non-Muslims can be the small acorn being planted. Who knows, it could grow to be the tree of Islam in the heart of someone!
A good word is like a good tree, its root is firmly fixed and its branches reach to the sky