The Vedanta Sutras of Badarayana, Commentary by Sankara (SBE38), tr. by George Thibaut [1896] at sacred-texts.com
35. And scripture also declares that (those performing works) are not overpowered (by passion and the like).
This Sûtra points out a further indicatory mark fortifying the conclusion that works co-operate towards knowledge. Scripture also shows that he who is furnished with such means as Brahmakarya, &c., is not overpowered by such afflictions as passion and the like. Compare the passage, 'That Self does not perish which they find out by Brahmakarya' (Kh. Up. VIII,,";, 3).--It is thus a settled conclusion that sacrifices and so on are works incumbent on the âsramas as well as co-operative towards knowledge.