James George Frazer,
The Golden Bough: A Study in Magic and Religion…
“ Then the porridge plate of each member of the family is rubbed with the lerotse leaves. When this purification has been completed, but not before, the people are free to eat of the new crops. On the night after the purification every man was bound, as a matter of ritual, to sleep with his chief wife. If she had been unfaithful to him during the past year, it was incumbent on her to confess her sin before she fulfilled her part of the ceremony. Having confessed she was purified by a medicine-man, who fumigated her with the smoke produced by burning a bean plant. ”
