Others offer the out-breath into the in-breath, that is, they practise the breath-control called the filling (pūraka); and others offer the in-breath into the out-breath, practising the breath-control called the emptying (recaka). The course of the out-breath is the going-forth of air through mouth and nostrils; the course of the in-breath is its opposite, the going-down. Having checked these two courses, intent on breath-control, they practise the breath-control called the holding (kumbhaka). Further.

Other men of the discipline of action make their standing in the breath-restraints (pranayama). These are of three kinds, by the division of in-breathing, out-breathing, and retention. 'They offer the in-breath into the out-breath' is the in-breathing; 'the out-breath into the in-breath' is the out-breathing; 'having stopped the courses of the in-breath and the out-breath, they offer the breaths into the breaths' is the retention. To the three who are given to breath-restraint there applies also 'of restrained food'. All these, engaged in the varieties of the discipline of action, from the making of substance the sacrifice down to the breath-restraint, each in what he himself seeks, are knowers of the sacrifice that has the form of the obligatory and occasional action preceded by the great sacrifices spoken of in 'having created the creatures together with sacrifice'; settled in that, and for that very reason having their taint worn away.

This is a brief sub-gloss. For a fuller reading of this verse, see Madhusūdana, Śaṅkara, or Rāmānuja above.

Others, devoted to the restraint of breath, offer the out-breath into the in-breath, and the in-breath into the out-breath; the sense is that they abide in the holding of the breath.