The Compendium of Caraka 4.3.12_2

4.3.12_2

na caivāsamyagupayujyamānā rasā garbhamabhinirvartayanti, na ca kevalaṃ samyagupayogādeva rasānāṃ garbhābhinirvṛttirbhavati, samudāyo 'apyatra kāraṇamucyate/

Nor do chyles that are improperly used bring about an embryo, nor does the production of an embryo occur from the proper use of chyles alone; here too combination is stated to be the cause.