Natyashastra
एवं रङ्गशिरः कृत्वा दारुकर्म प्रयोजयेत् । ऊहप्रत्यूहसंयुक्तः नानाशिल्पप्रयोजितम् ॥ ७५॥
Thus, having constructed the stage's head (rāṅgaśirā), one should proceed with the work involving the wood (dāru). It should be joined with opposing and complementary forms (ūhapratyūha) and adorned with various artistic crafts (nānaśilpā).
english translation
evaM raGgaziraH kRtvA dArukarma prayojayet । UhapratyUhasaMyuktaH nAnAzilpaprayojitam ॥ 75॥
hk transliteration by Sanscript