मां स भक्षयिताऽमुत्र यस्य मांसमिहाद्म्यहम् ।
एतन्मांसस्य मांसत्वं प्रवदन्ति मनीषिणः ॥
This verse plays on the etymological meaning of the word मांस (Meat). It can be split as मां सः According to this, it means that if we eat it in this world, then in the afterlife, it will eat us. So terrible is the sin of meat-eating.
- Manu Smriti