187,188, and 189. Who so restrains, through his own effort, the Self that is immersed in the activity, whether good or bad, of yoga (thought, word and deed), rests on pure perception and knowledge, has no desire whatsoever for alien objects and is free from all attachments, that Self contemplates on his own unity. Such a Self never thinks that karmas are of the nature of the Self, nor the nokarmas. Such a right knowing Self, of the nature of perception and knowledge entirely different from alien nature, contemplates upon his pure Self and very soon becomes identical with that Pure Self who is free from all karmas.