Astanga Hrudaya
उपविष्टकमाहुस्तं, वर्द्धते तेन नोदरम्। शोकोपवासरूक्षाद्यैरथवा योन्यतिस्रवात्॥१५॥
This is known as Upavishtaka. By grief, fasting, dryness or excess of fluid discharge from the vaginal tract, vata undergoing aggravation causes emaciation and dryness of the fetus, this is known as Nagodara.
english translation
upaviSTakamAhustaM, varddhate tena nodaram। zokopavAsarUkSAdyairathavA yonyatisravAt॥15॥
hk transliteration by Sanscript