Natyashastra
ध्रुवायां सम्प्रयुक्तायां पटे चैवापकर्षिते । कार्यः प्रवेशः पात्राणां नानार्थरससम्भवः ॥ ३॥
With the Dhruvā-songs properly performed and the curtain drawn aside, the entrance of the characters, who are to create various Sentiments, should take place.
english translation
dhruvAyAM samprayuktAyAM paTe caivApakarSite । kAryaH pravezaH pAtrANAM nAnArtharasasambhavaH ॥ 3॥
hk transliteration by Sanscript