1. 156

    सकारेण बहिर्याति हकारेण विशेत् पुनः । हंसहंसेत्यमुं मन्त्रं जीवो जपति नित्यशः ॥ १५५ b ॥

    The breath is exhaled with the sound 'Ha' and inhaled again with the sound 'Sa'. Thus the individual always repeats this particular mantra Hamsa. (This verse is found only in some versions of Vijnana Bhairava; hence it is given as 155b)