Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates: Sayyiduna Ali (may Allah be pleased with him) had eighteen distinctions that no other member of this Ummah has.
Al-Tabarani recorded it in al-Mu'jam al-Awsat; its chain contains Hakim bin Jubayr, who is da'if (weak).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14697