Astanga Hrudaya
प्रस्पन्दिन्यश्च वातास्रं वहन्ते पित्तशोणितम्। स्पर्शोष्णाः शीघ्रवाहिन्यो नीलपीताः कफं पुनः॥३७॥
those which are warm to touch; of quick pace (rate), bluish-yellow in colour are carrying blood mixed with pitta; those which are white in colour, smooth, static (immovable, firm, hard) and cold to touch are carrying blood mixed with kapha;
english translation
praspandinyazca vAtAsraM vahante pittazoNitam। sparzoSNAH zIghravAhinyo nIlapItAH kaphaM punaH॥37॥
hk transliteration by Sanscript