Spontaneous discipline arising from a total freedom from attachment. The vow of discipline is possible only against the background of desire (the basic expression of which is ego-clinging), for it is the principal antidote to it. Yogis who are free from desire (and who therefore have no need to take such a vow) possess a discipline that is entirely natural to them. This is also said to be the case for the inhabitants of Uttarakuru, the northern continent. [TPQ, 2010]