Dhammapada 9.121
Let no man think lightly of evil, saying in his heart, It will not come nigh unto me. Even by the falling of water-drops a water-pot is filled; the fool becomes full of evil, even if he gather it little by little.
Let no man think lightly of evil, saying in his heart, It will not come nigh unto me. Even by the falling of water-drops a water-pot is filled; the fool becomes full of evil, even if he gather it little by little.