- under the protection (support) of mother
- under the protection of father
- under protection of relatives or guardians
- under protection of a religious community
- under a mandate (as by royal decree or court edict)
- under duress
- promised to someone else
- betrothed to someone else
- formally engaged to someone else
- married to someone else
It is critical to bear in mind that the Buddha did not make up these restrictions out of his own sense of propriety. He was also not merely repeating tradition. He directly saw and understood how unethical conduct (i.e., behavior in relation to others) results in dukkha (suffering, distress, unsatisfactoriness, woe).
The most common formulations of Buddhist ethics are found within the Five Precepts, in the context of the Noble Eightfold Path, the more detailed Ten Courses of Unwholesome Conduct, and conveniently summarized in a lengthy sutra known as the "Advice to Householders" discourse (Sigalovada Sutra, DN 31) -- which all suggest that one should neither crave nor be attached to sensual pleasure.