Natyashastra
हस्तौ शिरस्सन्नतं च गङ्गावतरणं त्विति । यानि स्थानानि याश्चार्यो व्यायामे कथितानि तु ॥ १६९॥
Gaṅgāvataraṇa—foot with the toes and the sole turned upwards, hands showing Tripatāka with the fingers pointing downwards and the head being Sannata.
english translation
hastau zirassannataM ca gaGgAvataraNaM tviti । yAni sthAnAni yAzcAryo vyAyAme kathitAni tu ॥ 169॥
hk transliteration by Sanscript