Natyashastra
पताके तु यदा वक्राऽनामिका त्वङ्गुलिर्भवेत् । त्रिपताकः स विज्ञेयः कर्म चास्य निबोधत ॥ २८॥
When the third finger of the Patāka hand is bent, it is known as the Tripatāka hand. Now, listen to its uses.
english translation
patAke tu yadA vakrA'nAmikA tvaGgulirbhavet । tripatAkaH sa vijJeyaH karma cAsya nibodhata ॥ 28॥
hk transliteration by Sanscript