Markandeyapurana 41.13

41.13

apaḥ pūrvaṃ sakṛt prāśya tūṣṇīṃ bhūtvā samāhitaḥ /
prāṇāyeti tatastasya prathamā hyāhutiḥ smṛtā //

Having first taken one sip of water, let him remain silent with mind composed; and then is prescribed the first oblation to the vital air called Prāṇa,[6] and the second should be to the vital air Apāna;[7] and the next to that called Sam-āna;[8] the fourth to that called Udāna;[9] and the fifth to that called Vy-āna.[10] Having performed these oblations separately, while restraining his breath, he should at length eat according to his inclination. He should drink water once again, and after rinsing out his mouth, he should touch his heart.