Moodhurai - 12th Century Didactic Poetry - Avvayar - 25
nanjudaimai thaanaRindhu naagam karandhuRaiyum anjaap puramkidakkum neerppaambu nenjiR karavudaiyaar thammai kaappaar karavaar karavilaa nenjat thavar. A poisonous snake will live in hiding, while a poison-less water snake will roam freely without fear. People with poison in their hearts will conceal it and speak, while the innocent will be outspoken.