Natyashastra
आचार्यबुद्ध्या कर्तव्यस्त्र्यश्रस्तालप्रमाणतः । तस्मान्न लक्षणं प्रोक्तं पुनरुक्तं भवेद्यतः ॥ १४७॥
It should be executed with the measure of a tāla and a triangular form, guided by the intellect of the teacher. Since it has already been explained, restating it would lead to repetition.
english translation
AcAryabuddhyA kartavyastryazrastAlapramANataH । tasmAnna lakSaNaM proktaM punaruktaM bhavedyataH ॥ 147॥
hk transliteration by Sanscript