Skanda Purana 7.18.89_242

7.18.89_242

prāṇopānaḥ19 samānaśca udāno vyāna eva ca .
ye pañcavāyavo dehe teṣāṃ nigrahaṇaṃ yatet20 .. 23 . .
apānañca samānañca kṛtvaikagatamādṛtaḥ21 .
vyānena sahitaṃ prāṇamudāne sanniveśayet . .24..

Prāṇa, apāna, samāna, udāna, and vyāna— / the five vital airs in the body—one should strive to restrain them. (23) / Having attentively unified apāna and samāna, / one should place prāṇa along with vyāna into udāna. (24)