Chi è scottato una volta, l'altra vi soffia su. (literally: Who is burned once, blowing the other direction/way.)
Cane scottato dall'acqua calda ha paura della fredda. (literally: The dog poured by the hot dog is afraid of the cold.)

In Hungarian: Akit a kígyó megmart, az a gyíktól is fél. (literally, who was once bitten by a snake, will fear of even a lizard.)
http://hu.bab.la/szótár/magyar-angol/akit-a-kígyó-megmart-a-...
Once bitten, twice shy.
=something that you say which means when you have had an unpleasant experience you are much more careful to avoid similar experiences in the future

لَا يُلْدَغُ الْمُؤْمِنُ مِنْ جُحْرٍ وَاحِدٍ مَرَّتَيْنِ
A believer won't redo the same mistake.
https://sites.google.com/site/nvisl­amica/in-depth/the-quran-1

40 Hadis (Resim Dosyası)
11. لَا يُلْدَغُ الْمُؤْمِنُ مِنْ جُحْرٍ وَاحِدٍ مَرَّتَيْنِ
11. A believer won't redo the same mistake.
11. Mümin bir delikten iki defa ısırılmaz.
http://dilingilizturk.blogcu.com/uc­-dilde-kirk-hadis/5927960

https://www.italki.com/question/177893
Literal meaning :
" A believer doesn't get stung twice from a hole (i.e the same hole) "
It means :
A believer should be wise not to make the same mistake twice.
The analogy is :
If you insert your hand into a hole in the rock, and you get stung / bitten ( by the snake or animal living inside ) then you should be wise not to insert your hand again and get bitten for the second time
The meaning is similar to the English proverb
"Fool me once shame on you, fool me twice shame on me"



I wrote my diploma about phraseology/sayings/idioms, this is the most beloved part of the linguistics for me.
I wish you good luck.



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Note added at 34 mins (2016-03-12 18:01:59 GMT)
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http://dictionary.cambridge.org/it/dizionario/inglese/once-b...

http://forum.wordreference.com/threads/he-who-was-once-bitte...
A Chinese proverb means "He who was once bitten by a snake will have a fear of a noose/coiled rope (for drawing water from a well) for ten years".
(In China, "ten" is a very special number, considered to be important and auspicious. Here, however, it is used to emphasize "for a very LONG time") .
In Japanese, a similar expression is "He who was once chased by a tiger will be frightened at the sight of a painting of a tiger".
I believe we have some similar expressions in English, like "A burnt child dreads the fire" or "Once bitten twice shy".
Chi è stato morso da un serpente ha paura anche di una lucertola. (literally: he who was (once) bitten by a snake will be afraid of a lizard too")
Chi si è scottato con l'acqua calda, ha paura anche di quella fredda. (literally: if you got burnt by hot water, you now are afraid of cold water too)

Lasciamo il letterale e proponiamo proverbi italiani che si avvicinano.