Natyashastra
किञ्चिदवाङ्ग्मुखदृष्टिः सास्रस्वेदापमार्जनपरश्च । अव्यक्तोल्बणचेष्टो गुरौ विनययन्त्रितो रुष्येत् ॥ १७॥
One should show anger against control by superiors with slightly downcast eyes, wiping off slight perspiration and not expressing any violent movement.
english translation
kiJcidavAGgmukhadRSTiH sAsrasvedApamArjanaparazca । avyaktolbaNaceSTo gurau vinayayantrito ruSyet ॥ 17॥
hk transliteration by Sanscript