Volume 5, Book 59, Number 405:
Narrated Qatada:
We do not know of any tribe amongst the ‘Arab tribes who lost more martyrs than Al-Ansar, and
they will have superiority on the Day of Resurrection. Anas bin Malik told us that seventy from the
Ansar were martyred on the day of Uhud, and seventy on the day (of the battle of) Bir Ma’una, and
seventy on the day of Al-Yamama. Anas added, “The battle of Bir Ma’una took place during the life –
time of Allah’s Apostle and the battle of Al-Yamama, during the caliphate of Abu Bakr, and it was the
day when Musailamah Al-Kadhdhab was killed.”