It is narrated from Sayyiduna Mughirah bin Shu’bah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Do not speak ill of the dead, for by doing so you will cause distress to the living.
Hadith Referenceالفتح الربانی / كتاب المدح والدم / 10135
Hadith Gradingمحدثین:صحیح
Hadith Takhrij«حديث صحيح، أخرجه الترمذي: 1982 ، (انظر مسند أحمد ترقيم الرسالة: 18210 ترقیم بيت الأفكار الدولية: 18397»
Brief Explanation
Benefits: … Those who have passed away have reached their end, therefore, if their virtues are not mentioned, then at the very least, one should refrain from mentioning their faults and shortcomings.