यथा सिंहो गजो व्याघ्रो भवेद्वश्यः शनैः शनैः । तथैव सेवितो वायुरन्यथा हन्ति साधकम् ॥ २.१५ ॥

yathā siṃho gajo vyāghro bhavedvaśyaḥ śanaiḥ śanaiḥ । tathaiva sevito vāyuranyathā hanti sādhakam ॥ 2.15 ॥

Just as lions, elephants and tigers are slowly tamed (become obedient) by means of regular training, similarly the Prana (breath) is controlled gradually - if, however, if is not tamed, Prana will cause the practitioner's death (death means there is no Prana).