मनुस्मृति - भीरवः

चरणामन्नमचराः दंष्ट्रिणामप्यदंष्ट्रिणः ।
अहस्ताश्च सहस्तानां शूराणां चैव भीरवः ॥

- मनुस्मृति

charANAm annam acharAH damShTriNAm api adamShTriNaH ।
ahastAshcha sahastAnAm shUrANAm chaiva bhIravaH ॥

- manu smRuti

Immovables (plants) become food to the movables (herbivores). Those without teeth (canines) to those with teeth (carnivores). Those without hands(fish, birds) to those with hands (humans). Cowards become food for the brave.

- Manu Smriti