य इमे वेदगुह्यज्ञा ऋषयः संशितव्रताः । एतेऽस्य ग्रहणे शक्ताः प्रयोगे धारणे तथा ॥ २३॥
The sages who know the mystery of the Vedas and have fulfilled their vows, are capable of maintaining this (Nāṭyaveda) and putting it into practice.
english translation