Collect donations from unorthodox Pharaoh’s student (4,3,3,5)

I believe the answer is:

pass the hat round

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'collect donations' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'unorthodox pharaoh's student' is the wordplay.
'unorthodox' is an anagram indicator.
'pharaohs'+'student'='pharaohsstudent'
'pharaohsstudent' is an anagram of 'PASS THE HAT ROUND'.

'from' acts as a link.

Can you help me to learn more?

(Other definitions for pass the hat round that I've seen before include "getting deerstalker to circulate?" , "Collect money" , "What some collectors do" , "causing revolution in Panama?" .)

I've seen this clue in The Hindu.

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