Arthashastra
अनर्थ्याश् च प्रिया दृष्टाश् चित्त ज्ञान अनुवर्तिनः । अभिहास्येष्व् अभिहसेद् घोर हासांश् च वर्जयेत् ॥
While laughing in jest, he should avoid loud laughter; he shall avoid evil aspersions against others, nor ascribe evil to others;
english translation
anarthyAz ca priyA dRSTAz citta jJAna anuvartinaH । abhihAsyeSv abhihased ghora hAsAMz ca varjayet ॥
hk transliteration by Sanscript