Natyashastra
संज्ञोपदेशपृच्छासु स्वभावाभाषणे तथा । निर्देशावाहने चैव भवेदाकम्पितं शिरः ॥ २१॥
(Uses): The Ākampita head is to be applied in giving a hint, teaching, questioning, addressing in an ordinary way (lit. naturally), and giving an order.
english translation
saMjJopadezapRcchAsu svabhAvAbhASaNe tathA । nirdezAvAhane caiva bhavedAkampitaM ziraH ॥ 21॥
hk transliteration by Sanscript