Natyashastra
सुधाकर्म बहिस्तस्य विधातव्यं प्रयत्नतः । भित्तिष्वथ विलिप्तासु परिमृष्टासु सर्वतः ॥ ८३॥
The walls should be carefully finished with a smooth coating. The process should be done with great effort, ensuring that all surfaces are thoroughly polished and prepared from all sides.
english translation
sudhAkarma bahistasya vidhAtavyaM prayatnataH । bhittiSvatha viliptAsu parimRSTAsu sarvataH ॥ 83॥
hk transliteration by Sanscript