of family and friends who constitute his or her closest associates, those he would approach first for help. The nuclear family, consisting of a husband and a wife and their unmarried children, is the most important kin group. Within this unit are the strongest emotional ties, the assurance of aid in the event of trouble, economic cooperation in labor, sharing of produce and income, and contribution as a unit to ceremonial obligations. In rural communities, neighbors—who are often also kin—may be important, too. Fictive child-parent, sibling, and close friend relationships Cambodia transcend kinship boundaries and serve to strengthen interpersonal and interfamily ties. Beyond this close circle are more distant relatives and casual friends. In rural Cambodia, the strongest ties a Khmer may develop—besides those to the nuclear family and to close friends—are those to other members of the local community. A strong feeling of pride—for the village, for the district, and province—usually characterizes Cambodian community life. Legally, the husband is the head of the Khmer family, but the wife has considerable authority, especially in family economics. The husband is responsible for providing shelter and food for his family; the wife is generally in charge of the family budget, and she serves as the major ethical and religious model for the children, especially the daughters. Both husbands and wives are responsible for domestic economic tasks. Customs In Khmer culture a person's head is believed to contain the person's soul—therefore making it taboo to touch or point one's feet at it. It is also considered to be extremely disrespectful to use the feet to point out a person, or to sit or sleep with the soles of the feet pointing at a person, as the feet are the lowest part of the body and are considered to be impure. When greeting people or to show respect in Cambodia people do the "sampeah" gesture, identical to the Indian namaste and Thai wai. Customary Cambodian teachings are laid out in verse form in long works from the 14th to 18th centuries collectively called Chhbap ("rules" or "codes"). These were traditionally learned by rote. Works such as the Chhbap Pros ("Boy's Code"), Chhbap Srey ("Girl's Code") and Chhbap Peak Chas ("Code of Ancient Words") gave such advice as: a person that does not wake up before sunrise is lazy; a child must tell parents or elders where they go and what time they will return