Natyashastra
ब्रवीमि वः कथां गुह्यां यन्मां पृच्छन् सुव्रताः । पूर्वरङ्गविधानस्य तां च मे सन्निबोधत ॥ १६॥
I shall tell you the secret story, which you have asked about, O virtuous ones. Listen to it carefully, for it pertains to the rules of the preliminary rites.
english translation
bravImi vaH kathAM guhyAM yanmAM pRcchan suvratAH । pUrvaraGgavidhAnasya tAM ca me sannibodhata ॥ 16॥
hk transliteration by Sanscript