رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 1536
The Book of the Prohibited actions
Prohibition of Calumny
وَعَنْ حُذَيْفَةَ رَضِيَ اللَّه عَنْهُ قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ : لَا يَدْخُلُ اَلْجَنَّةَ نمام ((مُتَّفَقٌ عَلَيْهِ)).
Hudhaifah (May Allah be pleased with him) said: The Messenger of Allah (ﷺ) said, "The person who goes about with calumnies will never enter Jannah." [Al-Bukhari and Muslim].
Riyad as-Salihin, 1536