Urwah said: Among the names of the Ansar who took part in Badr, from Banu Amr bin Malik bin al-Najjar, then from Banu Qays bin Ubayd bin Zayd bin Mu'awiyah bin Amr bin Malik, is this: Unays bin Mu'adh bin Qays.
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 772