It is narrated from Hazrat Abu Dharr (may Allah be pleased with him) that I heard the Noble Prophet (peace and blessings be upon him) say: Whoever accuses a slave-girl of adultery without having seen her committing adultery himself, Allah Almighty will punish him with lashes of fire on the Day of Resurrection.
Hadith Referenceمسند احمد / مسند الأنصار رضي الله عنهم / 21375
Hadith Gradingحکم دارالسلام:إسناده ضعيف، الحمصي وأبو طالب مجهولان