Hadithcore
Riyad as-Salihin, 1560

Abu Dharr (May Allah be pleased with him) reported:

I heard the Messenger of Allah (ﷺ) saying, "When any Muslim accuses another Muslim of sin or of disbelief, the reproach rebounds upon the one who utters it, if the other person is not deserving of it." <b>[Al- Bukhari]</b>.

وعن أبي ذر رضي الله عنه أنه سمع رسول الله صلى الله عليه وسلم يقول‏:‏ ‏

‏لا يرمي رجل رجلا بالفسق أو الكفر، إلا ارتدت عليه، إن لم يكن صاحبه كذلك‏

‏ ‏(‏‏(‏رواه البخاري‏)‏‏)‏‏.‏

References1 variant
In-Book Reference
Book 17, Hadith 50
Sharh · explanationclick to expand
<b>Guidance from the Hadith:</b><br> 1) It is prohibited to curse a Muslim or accuse him of disbelief, for this is one of the gravest sins and most tremendous lies.<br> 2) The Hadith warns against accusing a specific Muslim of disbelief unless there is a clear Shariah proof to support this. This is because labeling someone as a disbeliever is a religious ruling that must be supported by Shariah texts, approved rules, and the Fatwa of outstanding scholars.
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