The Prophet (sal Allahu alaihi wa sallam) said, “Whoever of you sees something wrong, let him change it with his hand. If unable, then let him change it with his tongue. If unable, then with his heart. And that is the weakest degree of faith.” [Sahih Muslim]
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And in the hadith related by Imam Muslim concerning oppressors, the Prophet (sal Allahu alaihi wa sallam) said: “Whoever fights them with his hand is a believer, whoever fights them with his tongue is a believer, whoever fights them in his heart is a believer. Beyond that, there is not a mustard grain of faith.”
