The slametan (or selametan, slamatan, and selamatan) is the communal feast from Java, symbolizing the social unity of those participating in it. Clifford Geertz considered it the core ritual in Javanese religion, in particular the abangan variant. The feast is common among the closely related Javanese, Sundanese and Madurese people.
A slametan can be given to celebrate almost any occurrence, including birth, marriage, death, moving to a new house, and so forth. Depending on the intention, the mood and emphasis may vary somewhat, but the main structure is the same. Geertz categorizes them into four main types:
The ceremony takes its name from the Javanese word slamet, from Arabic: salam, which refers to a peaceful state of equanimity, in which nothing will happen. This is what the host intends for both himself and his guests, by experiencing the egalitarian structure of the slametan and the petitions of supernatural protection from spirits.
In Geertz's fieldwork in Mojokuto in the 1950s, he found that costs of slametans varied from 3 to 5,000 Indonesian rupiahs, depending on the type and the relative wealth of the host.
Slametans are generally held in the evening, after evening prayer is finished. The date is determined either by the occurrence it is celebrating (for births and deaths, for example), or on auspicious days in the Javanese calendar. The guests, always men, are always close neighbors, and the selection of guests is based entirely on proximity, and not whether they are friends or relatives. They are called by a messenger of the host (usually a child of his) only five or ten minutes before the slametan is to begin, and they must drop whatever they are doing to come.