Ruling on kissing daughters or sons on the mouth

Dear Brothers & Sisters,
As-Salaamu-Alaikum wa Rahmatullahi wa Barakatuh. (May Allah's Peace, Mercy and Blessings be upon all of you)
One of our brothers/sisters has asked this question:
Is it true that a father should not kiss his daughter on the mouth and that a mother should not kiss her son on the mouth?
(There may be some grammatical and spelling errors in the above statement. The forum does not change anything from questions, comments and statements received from our readers for circulation in confidentiality.)
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Answer:

Praise be to Allaah.

This is true. A man should not kiss his mother or daughter on the mouth. Similarly, a brother should not kiss his sister on the mouth, or his paternal aunt or his maternal aunt, or any of his mahrams. Kissing on the mouth is only for husband and wife. And Allaah knows best.

Whatever written of Truth and benefit is only due to Allah's Assistance and Guidance, and whatever of error is of me. Allah Alone Knows Best and He is the Only Source of Strength.
Your brother and well wisher in Islam

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