13.8-12  Amanitvam etc.  upto anyatha.  [Devotion] with me Yoga of non-difference etc. :  a conviction, 'There exists nothing else different from the Mighty Lord, the Supreme Soul,' - a conviction, which allows no difference and is itself a Yoga, i.e. a devotion in the form of this conviction.  Hence this never fails.  For, either the desires that are considered to be causes for failure are absent, or those desires which are of the form of mind-modifications,  are completely absorbed in Him alone.  The above may be borne in mind in all [other] cases too.  What is opposed to this is  [conducive to]  wrong  knowledge :  such as pride and others.
 That which is to be known by this knowledge is described  [as] -