What does this mean?

More Orthodox Jewish writings

https://www.sefaria.org/Yevamot.98a?lang=en

https://web.archive.org/web/20201021130429/https://www.sefaria.org/Yevamot.98a?lang=en

the offspring of a male gentile is considered no more related to him than the offspring of donkeys and horses

Yevamot 98a