Sayyidah Sawdah (may Allah be pleased with her), the wife of the Prophet (peace and blessings be upon him), narrates: I said: "O Messenger of Allah! When we die, will Uthman bin Maz'un pray for mercy for us until he comes to us?" The Prophet (peace and blessings be upon him) said to Sayyidah Sawdah (may Allah be pleased with her): "O daughter of Zam'ah! If you knew what I know about death, you would realise that it is harder than what you estimate."
Al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الجنائز / 3895