Reference for Bava Kamma 86:15
כי אתא רב דימי א"ר יוחנן כופר מה ת"ל (שמות כא, ל) אם כופר לרבות כופר שלא בכוונה ככופר בכוונה
But might [the Baraitha] not perhaps have stated [some points] and omitted [others]? — It must therefore have been that Raba himself was questioning whether in the case of Fire [burning a human being] unintentionally there would be payment for the amount of the value [of the loss] or whether there would be none. Should we say that it was only in the case of cattle — where if the manslaughter was unintentional <i>kofer</i> would be paid — that for unintentional manslaughter the amount of the value [of the loss] is to he paid — whereas in the case of Fire — where for intentional manslaughter no <i>kofer</i> would be paid<span class="x" onmousemove="('comment',' For it merges with the graver capital charge. ');"><sup>14</sup></span>