Natyashastra
महागीतेषु चैवार्थान्सम्यगेवाभिनेष्यसि । यश्चायं पूर्वरङ्गस्तु त्वया शुद्धः प्रयोजितः ॥ १५॥
"You will skillfully perform the meanings in the great songs, and this previous stage, which has been purified, will be properly used by you."
english translation
mahAgIteSu caivArthAnsamyagevAbhineSyasi । yazcAyaM pUrvaraGgastu tvayA zuddhaH prayojitaH ॥ 15॥
hk transliteration by Sanscript