Mbh 12.18.1d

Having shaved their heads clean and adopted the brown robe, men may be seen to betake themselves to a life of wandering mendicancy, though bound by various ties and though ever on the lookout for bootless wealth. They who, casting off the three Vedas, their usual occupations, and children, adopt a life of mendicancy by taking up the triple-headed crutch and the brown robe, are really persons of little understanding. Without having cast off anger and other faults, the adoption of only the brown robe, know, O king, is due to the desire of earning the means of sustenance. Those persons of clean-shaven heads that have set up the banner of virtue, have this only (viz., the acquisition of sustenance) for their object in life. Therefore, O king, keeping thy passions under control, do thou win regions of bliss hereafter by supporting them that are truly pious amongst men of matted locks or clean-shaven heads, naked or clad in rags, or skins or brown robes. Who is there that is more virtuous than he who maintains his sacred fire, who performs sacrifices with presents of animals and Dakshina, and who practises charity day and night?'"