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