during pregnancy for seven months, and for two months after birth, the husband must do as little work as possible and must under no circumstances cut anything—crops, grass, or wood—nor may he build a hut. His brother, or, if his brother’s wife is also pregnant, a friend, does all his work, though the wife carries on her duties as usual. The umbilical cord is cut by grass, otherwise the woman would not give birth to more children, for as grass grows freely so will the woman be fruitful.2

2Seligman, C.G.n/an/an/an/a and B.Z.n/an/an/an/an/a, , 440.