I work at one of the orphanages, and most of them are foundlings, and they reject the topic of dutifulness to parents from us because they do not have

Question:
May Allah reward you, Honorable Shaykh. This questioner says: I work at one of the orphanages, and most of them are foundlings. When the topic of dutifulness to parents or making du'a' for them is mentioned in the study or elsewhere, they reject it and find such topics strange. They argue that they do not have fathers and are unknown, and that their fathers are the reason for their presence in this place. In fact, some of them curse them and make du'a' against them, saying that they were deprived of this blessing because of them. The question is: What do you advise us, and should we teach them such topics?

Answer:
Yes, teach them dutifulness to parents and making du'a' for the parents. The mother of a foundling is known, without a doubt, but his father is unknown, may Allah protect us from that. But even so, we said: if your father wrongs you, if your father wrongs you, you must be dutiful to him.