Natyashastra
एवं काष्ठविधिं कृत्वा भित्तिकर्म प्रयोजयेत् । स्तम्भं वा नागदन्तं वा वातायनमथापि वा ॥ ७९॥
By following the woodwork technique, the wall construction should be carried out. The pillar may be designed in the shape of a serpent's tooth, or it can also take the form of a window.
english translation
evaM kASThavidhiM kRtvA bhittikarma prayojayet । stambhaM vA nAgadantaM vA vAtAyanamathApi vA ॥ 79॥
hk transliteration by Sanscript