Natyashastra
उत्तानाङ्गुलिसङ्कोच आलाप इति सञ्ज्ञितः । निष्क्रमोऽधोगतस्य(गतानां) स्यादङ्गुलीनां प्रसारणात् ॥ ३३॥
The contraction of fingers turned upward is called Āvāpa. The spreading out of fingers turned downward is called Niṣkrāma.
english translation
uttAnAGgulisaGkoca AlApa iti saJjJitaH । niSkramo'dhogatasya(gatAnAM) syAdaGgulInAM prasAraNAt ॥ 33॥
hk transliteration by Sanscript