It is narrated from him: The Prophet (peace and blessings be upon him) passed by Sayyiduna Mus'ab bin Umayr (may Allah be pleased with him) when he was returning from Uhud. He stopped by (the graves of) him and his companions and said: "I bear witness that you are alive in the presence of Allah Almighty." (Then he said to his own Companions:) "Visit (their graves) and send salam upon them. By the One in whose Hand is my soul, whoever sends salam upon them, they will keep responding to him until the Day of Resurrection."
Al-Tabarani recorded it in al-Mu'jam al-Kabir. Its chain contains Abu Bilal al-Ash'ari, whom al-Daraqutni (may Allah have mercy on him) declared da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الجنائز / 4316
Hadith Gradingمحدثین:إسناده ضعیف
Hadith Takhrij«أخرجه المعجم الأوسط للطبراني برقم: 3712»