Is it permissible for a mother to kiss her children, even if they are grown up?

The questioner : ... .

The Shaykh: This.

The questioner : ... .

The Shaykh : The boy, I mean, was he small?
Another questioner: ... .

The Shaykh : Is she grown up? Yes, she is grown up.

The questioner : ... .

The Shaykh : Now, we need to note this point: the prescribed form of kissing is that of mercy and compassion. If a mother kisses her child, whether male or female, from this perspective, there is no objection. However, if it is merely a social custom that has no substance other than "this is the habit," then no, without a doubt, mercy and compassion are present at an age where this observation applies. If a mother, for example, kisses her son, and the age difference between them is, say, fifteen or twenty years, there are rare stories where the age difference between 'Abdullah ibn 'Amr ibn al-'As and his father was ten years, because his father married him early. The point is, if the age difference is large, such as the mother being, for example, sixty and her son, let us suppose, forty, this kind of kissing as an expression of mercy is not appropriate. Yes, but at a younger age, the kissing still carries a taste of compassion and mercy; so I see no objection to this effect. However, one of the evils of spreading the practice of kissing an older person by a younger one is that it will stand between the mother and her daughter. The grandmother, for example, will come, the aunt will come, the maternal aunt will come, and so on, further and further, and it will become a custom with no distinction, whether her mother kissed her, or her grandmother, or her neighbor; therefore, this door should be blocked.
And peace be upon you.