Natyashastra
षट्शम्यमष्टतालं त्रिसन्निपातं त्रिवस्तु चाप्येवम् । सप्तदशपातयुक्तं विद्यादासारितं सम्यक् ॥ १७८॥
Thus, the Āsārita should be known as consisting of three sections (Vastus), with six Śamyās, eight Tālas, and three Sannipātas, making up a total of seventeen rhythmic units (Pātas).
english translation
SaTzamyamaSTatAlaM trisannipAtaM trivastu cApyevam । saptadazapAtayuktaM vidyAdAsAritaM samyak ॥ 178॥
hk transliteration by Sanscript