Natyashastra
स्थानेनानेन कर्तव्यः संल्लापस्तु स्वभावजः । नानाकार्यान्तरापेतैर्नृभिरुत्तममध्यमैः ॥ ५४॥
(Uses): From this Sthāna persons of the superior and the middling types should carry on their ordinary (lit. natural) conversation in connexion with various duties.
english translation
sthAnenAnena kartavyaH saMllApastu svabhAvajaH । nAnAkAryAntarApetairnRbhiruttamamadhyamaiH ॥ 54॥
hk transliteration by Sanscript