The meditative devotee should slowly push up the life air from the navel to the heart, from there to the chest, and from there to the root of the palate. He should search out the proper places with intelligence.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
नाभ्यां स्थितं हृद्यधिरोप्यतस्मा- दुदानगत्योरसि तं नयेन्मुनिः । ततोऽनुसन्धाय धिया मनस्वी स्वतालुमूलं शनकैर्नयेत
nābhyāṃ sthitaṃ hṛdyadhiropyatasmā- dudānagatyorasi taṃ nayenmuniḥ | tato'nusandhāya dhiyā manasvī svatālumūlaṃ śanakairnayeta
SB 2.2.20