Natyashastra
एककं तु विदार्येको ते चोभे विवधः स्मृतः षट्परं त्र्! यवरं वाऽपि विदार्या वृत्तमिष्यते । पदवर्णसमाप्तिस्तु विदारीत्यभिसञ्ज्ञिता ॥ १७॥
Splitting a single (unit) is known as Ekaka. Dividing it into two is called Vivadha. When it is divided into six or even three or two parts, it is termed Vṛtta. The completion of a word or syllable constitutes what is called Vidārī.
english translation
ekakaM tu vidAryeko te cobhe vivadhaH smRtaH SaTparaM tr! yavaraM vA'pi vidAryA vRttamiSyate । padavarNasamAptistu vidArItyabhisaJjJitA ॥ 17॥
hk transliteration by Sanscript