Natyashastra
पार्श्वमेकं शिरश्चैव हस्तोऽथ चरणस्तथा । पर्यायशः सन्नमयेल्लयतालवशानुगः ॥ १४५॥
He should alternately lower one side of the body, the head, a hand, and a foot, all in accordance with proper tempo and rhythm (laya and tāla).
english translation
pArzvamekaM zirazcaiva hasto'tha caraNastathA । paryAyazaH sannamayellayatAlavazAnugaH ॥ 145॥
hk transliteration by Sanscript