Phrase/command from ‘Ali Baba and the Forty Thieves’ (4,6)

I believe the answer is:

open sesame

(Other definitions for open sesame that I've seen before include "Spell from Ali Baba and the Forty Thieves" , "spelling words?" , "Magic password" , "a very successful means of achieving a result" , "Spell unlocking doors" .)

I've seen this clue in the Sydney Morning Herald.

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