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In order for one to achieve proper , firm and healthy " iman " one must practice righteous deeds or else his level of " iman " chokes and shrinks and eventually can wither away if one does not practice Islam long enough , hence the depth of practicing Islam is good deeds .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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