German phrase
Muss ~ stammen?
Meaning
Does ___ have to be from?
When to use it
Asks if a source is required. It is useful for official documents.
Example dialogue
Muss das Zeugnis von der Universität stammen?
Does the certificate have to be from the university?
Ja, das muss es sein, sonst wird es nicht anerkannt.
Yes, it does, otherwise it will not be recognized.