p. 274
नैतद्ब्रह्म त्वरमाणेन पुरुषेण लभ्यं यत् ब्रह्म मां पृच्छस्यभिषङ्गेण राजन् ।कथं तर्हि लभ्यमित्याह—बुद्धौ अध्यवसायात्मिकायां प्रलीने मनसि प्रचिन्त्या विद्या हि सा, यदा पुनः संकल्पविकल्पात्मकं मनो विषयेभ्यः परावृत्य स्वात्मन्येव निश्चलं भवतीत्यर्थः ।येयं बुद्धौ प्रलीने मनसि प्रचिन्त्या, सा विद्या ब्रह्मचर्येण वक्ष्यमाणेन लभ्या ॥
In plain words
O king, this Brahman is not attained by an impatient person in haste—which is how you ask me about it. How then is it attained? The text replies: That wisdom is to be contemplated when the mind merges into the decisive intellect. That is, when the wavering mind turns away from sensory objects and becomes completely still within the Self alone, that wisdom is to be attained through the discipline of brahmacharya that will presently be described.
Close to the Sanskrit
This Brahman is not attainable by an impatient person, O king, which Brahman you ask me with urgency. How then is it attainable, it says: That knowledge is to be contemplated when the mind is dissolved in the intellect of decisive determination; meaning, when the mind, whose nature is doubt and wavering, turns away from sensory objects and becomes motionless exclusively in the own Self. This knowledge which is to be contemplated when the mind is dissolved in the intellect is attainable through the discipline of brahmacharya that will be described.