18:33  

धृत्या यया धारयते मनःप्राणेन्द्रियक्रियाः ।
योगेनाव्यभिचारिण्या धृतिः सा पार्थ सात्त्विकी ॥१८- ३३॥

Transliteration

dhRRityaa yayaa dhaarayate manaHpraaNendriyakriyaaH ।

yogenaawyabhichaariNyaa dhRRitiH saa paartha saattwikii ॥१८- ३३॥

Translation

The resolve by which are restrained the heart, soul, sense activities,
By unwavering yoga, that resolve is sattvic, O Partha.

Translation

The unwavering resolve by which one regulates the activities of mind, Prana (or the bioimpulses), and senses through yoga (of meditation); that resolve is Saattvika, O Arjuna.

Translation

O son of Prtha, that determination which is unbreakable, which is sustained with steadfastness by yoga practice, and thus controls the mind, life, and the acts of the senses, is in the mode of goodness.