Natyashastra
समुद्वहन्निवाङ्गानि पङ्कलग्न इव व्रजेत् । अथ वृद्धस्य कर्तव्या गतिः कम्पितदेहिका ॥ ११४॥
He should walk as if lifting his limbs with effort, like one stuck in mud. Now, for an old Kāñcukīya, the Gait should be performed with a trembling body.
english translation
samudvahannivAGgAni paGkalagna iva vrajet । atha vRddhasya kartavyA gatiH kampitadehikA ॥ 114॥
hk transliteration by Sanscript