Natyashastra
मन्मथेर्ष्योद्भवं कोपं तर्जन्यङ्गुलिमोटनम् । निषेधगर्वगाम्भीर्यमौनं मानावलम्बनम् ॥ १६६॥
Anger arising from jealousy in love, twisting of the forefinger, prohibition, pride, profundity, silence, and adopting a resentful attitude (māna) — all these should be represented from this posture.
english translation
manmatherSyodbhavaM kopaM tarjanyaGgulimoTanam । niSedhagarvagAmbhIryamaunaM mAnAvalambanam ॥ 166॥
hk transliteration by Sanscript