The most common and most likely answer to this crossword clue is the 7 letter word CONSULT
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More clues leading to the result CONSULT
Buddy explains!

The straight part
We know that "Ask advice from" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ask advice from = consult.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CONSULT mean?
CONSULT noun- The act of consulting or deliberating; consultation
- The result of consultation; determination; decision.
- A council; a meeting for consultation.
- Agreement; concert.
- A visit, e.g. to a doctor; a consultation.
- To seek the opinion or advice of another; to take counsel; to deliberate together; to confer.
- To advise or offer expertise.
- To work as a consultant or contractor rather than as a full-time employee of a firm.
- To ask advice of; to seek the opinion of (a person)
- To refer to (something) for information.
- To have reference to, in judging or acting; to have regard to; to consider; as, to consult one's wishes.
- To deliberate upon; to take for.
- To bring about by counsel or contrivance; to devise; to contrive.