The Number of Killed from Both Parties
most of the narrations confirmed that seventy muslims were killed and most of them, sixty-five, helpers; forty-one of whom were from khazraj and twenty-four from aws. this, besides one jew and four emigrants.
as for the polytheists, twenty-two of them were killed, but some versions speak of thirty-seven; after all, allâh knows best. [ibn hisham 2/122-129; fath al-bari 7/351]