Shiva Purana
तासां मुखेषु तं सूक्ष्मं प्राणस्स्थापयेत् रसम् ॥ रसेन तेन नाडीस्ताः प्राणं पूरयते पुनः ॥ ९॥
Prāṇa (the vital air) places the subtle lymph at the mouths of the vessels. Then it fills the entire vessels with the lymph.
english translation
tAsAM mukheSu taM sUkSmaM prANassthApayet rasam ॥ rasena tena nADIstAH prANaM pUrayate punaH ॥ 9॥
hk transliteration by Sanscript