Natyashastra
अयमुद्वेष्टितकरणे त्वनुकरणार्थं प्रयोगमासाद्य । द्रुतमध्यमप्रचारः सकृदसकृदा प्रयोक्तव्यः ॥ २६८॥
This Udvēṣṭita Karaṇa (foot movement) is used for imitation, and should be applied sometimes quickly and sometimes at a medium pace.
english translation
ayamudveSTitakaraNe tvanukaraNArthaM prayogamAsAdya । drutamadhyamapracAraH sakRdasakRdA prayoktavyaH ॥ 268॥
hk transliteration by Sanscript