Reference for Bava Kamma 53:1
פטורין ר' יהודה בן בתירא אומר בזה אחר זה האחרון חייב מפני שקירב מיתתו
is guilty of murder: R. Judah b. Bathyra, however says: If consecutively the last is liable, for he was the immediate cause of the death.<span class="x" onmousemove="('comment',' Cf. supra p. 41. ');"><sup>1</sup></span> In the case where an ox meanwhile appeared and caught the [falling] child on its horns there is a difference of opinion between R. Ishmael the son of R. Johanan b. Beroka and the Rabbis.<span class="x" onmousemove="('comment',' Infra pp. 224-5. According to R. Ishmael compensation for manslaughter will have to be made by the owner of the ox, but according to the Rabbis there will be no payment, as the child at the time of the fatal fall was devoid of any value. ');"><sup>2</sup></span>