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Akhbārīsm " crystalized " as a distinct movement with the writings of Muhammad Amin al-Astarabadi ( d. 1627 AD ) and achieved its greatest influence in the late Safavid and early post-Safavid era .
 Muhammad Amin al-Astarabadi
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Muhammad Amin al-Astarabadi