The things our parents say to us!! And often, autistic children will take such statements very literally and as an absolute. I was told by my father when I was 4 years old that I was from an unwanted pregnancy, that my mother did not favor me, etc.
Not a good idea to tell one's kids such things, but worse if the child is autistic, because we will accept it as utter fact. And it could very likely remain in our memories forever.