We encountered some of our ancestors who had some acts of shirk (associating partners with Allah) and died upon them due to their ignorance; should we make du'a' (supplication) for them?

Question:
He says: Honorable Shaykh, may Allah grant you success. He says: We encountered some of our ancestors who had some acts of shirk (associating partners with Allah) that were prevalent in their times, and they died while still upon them due to their ignorance. The question is: Do we make du'a' (supplication) for them and seek forgiveness for them?

Answer:
The one who dies while calling upon other than Allah, you do not seek forgiveness for him, and you do not say that he was ignorant. Leave him; he died upon shirk (associating partners with Allah). Do you not seek forgiveness for him? Yes. And as for his being ignorant, Allah knows best what is between him and Allah. We do not know, but we deal with him based on what appears to us and apply the ruling according to what is apparent to us. Yes.