Astanga Hrudaya
पच्यमानात्प्रजायन्ते क्षीरात्सन्तानिका इव। धात्वाशयान्तरक्लेदो विपक्वः स्वंस्वमूष्मणा॥९॥
(metabolic heat activity) of blood just as the layer of scum, during the cooking of milk. Sapta kala - seven membranes: The moisture present inside the dhatu (tissue) and asayas (organs) processessed by their own heat (of each dhatu and asaya) become transformed into structures called kala,
english translation
pacyamAnAtprajAyante kSIrAtsantAnikA iva। dhAtvAzayAntarakledo vipakvaH svaMsvamUSmaNA॥9॥
hk transliteration by Sanscript