Natyashastra
पुनश्च करुणे कार्या गतिः स्थिरपदैरथ । बाष्पाम्बुरुद्धनयनः सन्नगात्रस्तथैव च ॥ ६१॥
Moreover, in the Pathetic Sentiment (karuṇa), the Gait should be performed with steady steps, eyes filled with tears, and limbs weakened (or drooping) accordingly.
english translation
punazca karuNe kAryA gatiH sthirapadairatha । bASpAmburuddhanayanaH sannagAtrastathaiva ca ॥ 61॥
hk transliteration by Sanscript