Muhammad bin Ishaq narrates: Among those traced to Itr bin Wa'il is Sayyiduna Amir bin Rabi'ah bin Ka'b bin Umayrah bin Malik bin Kinanah bin Amir bin Sa'id bin Abdullah bin al-Harith bin Rufaydah bin Adnan, and according to one view it is Tahir bin Rabi'ah, who was from Yemen.
Al-Tabarani recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 15648