Sanskrit Sukti on Character Harming

परनिन्दासु पाण्डित्यं 
स्वेषु कार्येष्वनुद्यम: 
प्रद्वेषश्च गुणज्ञेषु 
पन्थानो ह्यापदां त्रय: 

Parnindasu PaNdityam
Sweshu Karyeshvanudyam
Pradveshshch GunGyeshu
Panthaano Hyaapadaam Traya:

Meaning:
To be an expert at criticising others
To be lazy in one's own work,
To be hostile to the wise,
All these three are paths to trouble.