They can only marry among themselves and other Somalis considered them to be ritually unclean. The Ashanti viewed them as ritually unclean. Persons who come into contact with corpses are ritually impure. Even a ritually unclean Cohen could enter to perform various housekeeping duties. They sacrificed male oxen but did not eat them and buried them ritually. Gelatins derived from kosher animal sources (which were ritually slaughtered) are also "pareve". He learns that Jehnna will be ritually sacrificed to awaken Dagoth. He also notes that there are no moral overtones about Enlil being ritually impure. These rites function by ritually marking the transition of someone to full group membership. Foods dangerous to health are more to be guarded against than those ritually forbidden. Jews were also accused of ritually consuming the blood of Christians. They sometimes incorporate "ta-asobi" ceremonies, in which rice is ritually planted. Copious wine was drunk, out of characteristic cups that were ritually smashed. The governor of Mecca leads the guests who ritually clean the structure, using a broom. Pilots who ritually perform such checklists before landing are less likely to land gear-up.