धृत्या यया धारयते मनःप्राणेन्द्रियक्रियाः।
योगेनाव्यभिचारिण्या धृतिः सा पार्थ सात्त्विकी।।18.33।।
18.33 The unwavering firmness by which, through Yoga, the functions of the mind, the life-force and the senses are restrained that firmness, O Arjuna, is Sattvic (pure).
18.33 O Partha, dhrtya, the firmness; (-is connected with the remote word) avyabhicarinya, that is unfailing; yogena, through concentration, i.e. (the firmness that is) ever associated with samadhi (absorption in Brahman); yaya, with which; dharayate, one restrains;-what?-manah-prana-indriya-kriyah, the functions of the mind, vital forces and organs-restrains them from tending towards the path opposed to the scriptures-. Indeed, when restrained with firmness, they do not incline towards objects prohibited by the scriptures. Sa, that; dhrtih, firmness, which is of this kind; is sattviki, born of sattva. What is mean is that when one restrains the functions of the mind, vital forces and organs with unfailing firmness, one does so through yoga, concentration.
Dhrityaa yayaa dhaarayate manah praanendriyakriyaah; Yogenaavyabhichaarinyaa dhritih saa paartha saattwikee.
dhṛityā—by determining; yayā—which; dhārayate—sustains; manaḥ—of the mind; prāṇa—life-airs; indriya—senses; kriyāḥ—activities; yogena—through Yog; avyabhichāriṇyā—with steadfastness; dhṛitiḥ—determination; sā—that; pārtha—Arjun, the son of Pritha; sāttvikī—in the mode of goodness