הלכה על גיטין 5:7

That a mamzer (a child born from a forbidden marriage) should not marry a daughter of Israel: That a mamzer is prevented from marrying a daughter of Israel. And about this is it stated (Deuteronomy 23:3), "No mamzer shall come into the congregation of the Lord," meaning to say that he should not come to marry a woman from the daughters of the congregation of the Lord. But it is truly permissible for him to enter with them into all of their places of residence and to give and take with them in all things [just] like [any other] one of the children of Israel. And they, may their memory be blessed, have already said (Horayot 13a) that a mamzer Torah scholar precedes a ignoramus Kohen (priest) in the reading of the Torah (see Rambam on Mishnah Gittin 5:7).