The Ruling on a Woman Greeting a Non-Mahram Man

Suppose a woman calls one of her friends on the phone, and the friend’s brother or father answers. Should this woman say, “As-salamu alaykum”? Or should she say, “Is So-and-So there?” without the Islamic greeting? Please advise us. May Allah reward you with good.
Answer: The Sunnah is to greet with the salam; because a phone call is like a meeting. It is prescribed for a believer when he meets his brother or sister in Allah to say: “As-salamu alaykum,” or “As-salamu alaykum wa rahmat Allah,” or “As-salamu alaykum wa rahmat Allah wa barakatuh.” So, if he speaks to him on the phone, he starts by saying: “As-salamu alaykum.” If he adds “wa rahmat Allah wa barakatuh,” that is more complete. And the other person responds to him, saying: “Wa alaykum as-salam wa rahmat Allah wa barakatuh,” according to what his brother said to him. Then he asks about his purpose. Yes.
The presenter: May Allah reward you with good. This is if it is from the woman to the man...?
The Shaykh: Even between men and women, even if it is with a non-mahram; because this is the legislation of Allah. She says: “As-salamu alaykum.” The Prophet (peace and blessings be upon him) used to greet women who were non-mahrams. She says to him: “As-salamu alaykum,” then she says: “Where is So-and-So?” His wife, or his sister, or his mother. She asks about her, or about what she needs. If she is seeking a ruling, she asks, saying: “As-salamu alaykum,” and she asks about her need if she is asking a scholar. If she is seeking a ruling, she says: “As-salamu alaykum” first, then she asks.
The presenter: May Allah reward you with good.