An unwholesome person who attempts to harm a sage is like one who raises his head and spits at heaven: instead of reaching heaven, the spittle falls back on him. It is the same with someone who throws dust against the wind: instead of going somewhere else, the dust returns to defile his own body.
The sage cannot be harmed. Misdeeds will inevitably destroy the doer.
— Buddha Shakyamuni, Sutra in 42 Sections