عطر آن است که خود ببوید نه آنکه عطار بگوید

Question

For instance you go to a store and the store staff says "our product is the best".. and you wanna say "If it were the best it would be obvious from.. "

Answer 1

the proof of the pudding is in the eating

Comments

Thanks I just googled it, some also say the proof is in the pudding ( the short form )

Answer 2

Has to speak for itself

Don't tell me which one is good, I can see it and it has to speak for itself

Comments

good answer!

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Thanks

Answer 3

In my opinion, the best answer is the following proverb:

A good wine needs no bush

There’s no need to advertise or boast about something of good quality as people will always discover its merits.

http://www.oxforddictionaries.com/definition/english/good-wine-needs-no-bush