German phrase
Darf ich Ihnen ~ stellen?
Meaning
May I ask you ___?
When to use it
A polite request to ask. Use it with strangers or people you do not know well.
Example dialogue
Darf ich Ihnen eine Frage stellen?
May I ask you a question?
Ja, gern. Worum geht es?
Yes, of course. What is it about?