The most common and most likely answer to this crossword clue is the 5 plus 3 plus 7 letter word STAND AND DELIVER
I've seen this crossword clue in The Times
S
T
A
N
D
A
N
D
D
E
L
I
V
E
R
More clues leading to the result STAND AND DELIVER
Buddy explains!
The straight part
We know that "Hand over money" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hand over money = stand and deliver.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.