Natyashastra
आनन्दामर्षाभ्यां धूमाञ्जनजृम्भणाद्भयाच्छोकात् । अनिमेषप्रेक्षणतः शीताद्रोगाद्भवेदश्रु ॥ ९७॥
Weeping (asra) occurs as being due to joy, indignation, smoke, collyrium, yawning, fear, sorrow, looking with a steadfast gaze, cold and sickness.
english translation
AnandAmarSAbhyAM dhUmAJjanajRmbhaNAdbhayAcchokAt । animeSaprekSaNataH zItAdrogAdbhavedazru ॥ 97॥
hk transliteration by Sanscript