Having studied the Vedas duly and the treatises on the duties of King, . a Kshatriya, for leading the life of a Rishi, O king, may adopt the Bhikshu mode of life; but he should never do so for the sake of enjoying the pleasures of the world. Having left the domestic mode of life, he may adopt the life of mendicancy by begging what would barely support his life. A life of mendicancy is not obligatory upon the three orders (viz., Kshatriyas, Vaisyas and Sudras), O giver of profuse presents! Inasmuch, however, as they can adopt it if they choose this mode of life, therefore, is open to the four orders.
Vyasa said: "I shall expound to thee the two paths, viz., the destructible and the indestructible, depending respectively upon acts and knowledge. Listen with concentrated attention, O child, to me, as I tell thee the place that is reached by one with the aid of knowledge, and that other place that is reached by one with the aid of acts. The difference between these two places is as great as the limitless sky. These are the two paths upon which the Vedas are established; the duties indicated by Pravritti, and those based on Nivritti.
M. Tandy Sutton, Melissa Yingling, Ash Vyas, Humphrey Atiemo, Andrew Borkowski, Stephen C. Jacobs, Natasha Kyprianou. . (2006) Finasteride targets prostate vascularity by inducing apoptosis and inhibiting cell adhesion of benign and malignant prostate cells. 66:10.1002/pros.v66:11, 1194-1202.