The ruling on a husband saying to his wife's parents: "O my father" and "O my mother"

Question:
This questioner asks: Is it permissible for a man to say to his wife's father, "O my father," and to his wife's mother, "O my mother," without claiming descent from them? May Allah reward you with good.

Answer:
As a form of respect, there is nothing wrong with it. One may say "O father" or "O uncle" to an elder, and there is nothing wrong with that. One may say "O my son" to a younger person, and "O my daughter" as a form of kindness; there is nothing wrong with this. Yes.

The presenter:
May Allah reward you with good,