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Narrated Imran ibn Husayn: A man came to the Prophet (peace_be_upon_him) and said: Peace be upon you! He responded to his salutation. He then sat down. The Prophet (peace_be_upon_him) said: Ten. Another man came and said: Peace and Allah's mercy be upon you! He responded to his salutation when he sat down. He said: Twenty. Another man came and said: Peace and Allah's mercy and blessings be upon you! He responded to him and said when he sat down: and blessings be upon you! He responded to him and said when he sat down: Thirty.