The sacred houses are built together by all men who belong to a tribe line. They meet on a weekend, once a month, for eleven months. At the end of the monthly work is always a small ritual feast celebrated. The sacred houses consist of seven levels, each with four steps. Restriction to the access depends on the degree of kinship. Simple guests are allowed only in the lowest level of the house, friends at least in the second level, married relatives in the third, relatives from neighbouring villages in the fourth and partly in the fifth, those married in the village in the sixth and only the "Lulik Nain" (meaning "Lord of the Holy") up to the seventh level. He is the guardian of the house and the sacred objects, which are kept here. At the inauguration of the house, a buffalo is sacrificed and a great feast is celebrated.