Musnad Ahmad 1153:767

Aswad ibn Amir narrated to us, he said: Isra'il narrated to us, he said: Ibrahim ibn Ishaq narrated to us, from Ibrahim ibn Ubayd ibn Rifa'ah, from Aisha, she said: The Messenger of Allah, peace and blessings of Allah be upon him, said: "He is the worst of the three if he acts according to the deeds of his two parents," meaning the child of adultery.