Charak Samhita
शुक्रशोणितजीवसंयोगे तु खलु कुक्षिगते गर्भसञ्ज्ञा भवति ॥५॥
॥ Definition of garbha (embryo)॥ The unification of sperm, ovum and the soul in the womb is designated as garbha (embryo).
english translation
zukrazoNitajIvasaMyoge tu khalu kukSigate garbhasaJjJA bhavati ॥5॥
hk transliteration by Sanscript