Al-Bazzar recorded this from Sayyiduna Safinah (may Allah be pleased with him): He slaughtered a camel with a tree trunk. He asked the Prophet (peace and blessings be upon him) about this, and he asked: Did it make the blood flow? He replied: Yes! So the Prophet (peace and blessings be upon him) commanded that man to eat it (that is, permitted him). The narrators of Ahmad are the narrators of the Sahih, except that this is a report of Yahya bin Abi Kathir from Sayyiduna Safinah (may Allah be pleased with him).