Natyashastra
प्रासादे यन्मया प्रोक्तः प्रतारः केवलो भवेत् । किञ्चिन्नताग्रकाया तु प्रतारे गतिरिष्यते ॥ ९९॥
The platform (prāsāda) I have described is only a single step; But for a step of greater height, a different gait should be used on the platform.
english translation
prAsAde yanmayA proktaH pratAraH kevalo bhavet । kiJcinnatAgrakAyA tu pratAre gatiriSyate ॥ 99॥
hk transliteration by Sanscript