Biography of Tamim ibn Ya'ar
Tamim ibn Ya'ar ibn Qais ibn 'Adi ibn Umayya ibn Khadra ibn 'Uwf ibn al-Harith ibn al-Khazraj ibn Haritha
said Ibn Mandah and Abu Nu'aym: He was a Khadri.
Ibn al-Kalbi said: He was from the children of Khadira ibn 'Uwf, brother of Khadra, and this is said about al-Hakam ibn 'Amr al-Ghafari, and he was from the children of Nai'ila, brother of Ghifar.
Ibn 'Abd al-Barr said: He was Tamim ibn Ya'ar ibn Nasr ibn 'Amr al-Ansari al-Khazraj, who witnessed the Battle of Uhud with the Prophet ﷺ.
He said: This is how 'Ali ibn 'Umar ad-Darqutni mentioned it with the nun and sin not being a diacritical mark, I said: And similarly, Ibn Makula said.