Sayyiduna Uthman bin Affan (may Allah be pleased with him) narrates: We accompanied the Prophet (peace and blessings be upon him) at home and on journeys. The Prophet (peace and blessings be upon him) used to visit the sick Muslims and attend their funerals (the narrator is unsure; perhaps the words are:) follow their funerals.
Al-Bazzar recorded it, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الجنائز / 4133