पर्यायशः पार्श्वगतं शिरः स्यात् परिवाहितम् । आधूतमुच्यते तिर्यक् सकृदुद्वाहितं तु यत् ॥ २६॥
Parivāhita and Udvāhita: When the head is alternately turned to the two sides it is called Parivāhita, and when it is once turned upwards it is known as Udvāhita.
english translation