Natyashastra
स्वरालङ्कारसंयुक्तमस्वस्थपुरुषाश्रयम् । यदीदृशं भवेन्नाट्यं नाट्यधर्मी तु सा स्मृता ॥ ७३॥
A drama that is accompanied by vocal ornamentation and is based on the support of an unstable or disturbed person, is considered to be in the domain of theatrical tradition.
english translation
svarAlaGkArasaMyuktamasvasthapuruSAzrayam । yadIdRzaM bhavennATyaM nATyadharmI tu sA smRtA ॥ 73॥
hk transliteration by Sanscript