"The Dharma-Shâstras give a completely far-fetched theory of the origins of the castes, e.g. the Gautama-Dharma-Shâstra (4.17) relays the view that the union of a Shûdra woman with a Brâhmana, a Kshatriya or a Vaishya man brings forth the Pârashava c.q. the Yavana (‘Ionian’, Greek or West-Asian) and the Karana jâti."
January 1, 1970
https://en.wikiquote.org/wiki/Gautama_Dharmasutra