Al-Ala' bin al-Arar narrates: Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) was asked about Sayyiduna Ali (may Allah be pleased with him) and Sayyiduna Uthman (may Allah be pleased with him). He said: As for Sayyiduna Ali (may Allah be pleased with him), do not ask about him; look at the rank and standing he had with the Prophet (peace and blessings be upon him). The Prophet (peace and blessings be upon him) had all our doors into the mosque closed and left only his door open. As for Sayyiduna Uthman (may Allah be pleased with him), on the day the two hosts met he committed a grave sin, but Allah Almighty pardoned him; and among you he committed a sin lesser than that, and you people martyred him.
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains a narrator whom I do not know.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14675
Hadith Gradingمحدثین:إسنادہ ضعیف
Hadith Takhrij«اخر به الطبراني فى المعجم الأوسط (1188)»