Verse
यदक्षरं वेदविदो वदन्तिविशन्ति यद्यतयो वीतरागाः ।यदिच्छन्तो ब्रह्मचर्यं चरन्तितत्ते पदं संग्रहेण प्रवक्ष्ये ॥
This supreme Soul is the immutable self-existent Brahman of whom the Veda-knowers speak, and this is that into which the doers of askesis enter when they have passed beyond the affections of the mind of mortality and for the desire of which they practise the control of the bodily passions; that status I will declare to thee with brevity.
Gītā 8·11