Natyashastra
सन्दंशस्त्रिविधो ज्ञेय ह्यग्रजो मुखजस्तथा । तथा पार्श्वगतश्चैव रसभावोपबृंहितः ॥ १११॥
The Sandaṃśa (hand) according to the Sentiments and States, is of three kinds, viz. that ॥ held॥ in front, that near the mouth and that on one side.
english translation
sandaMzastrividho jJeya hyagrajo mukhajastathA । tathA pArzvagatazcaiva rasabhAvopabRMhitaH ॥ 111॥
hk transliteration by Sanscript