「Both hands equal」might describe a more modernistic view of MARRIAGE, with one hand from each spouse, but it is certain that the sages would not have intended such a fairy-tale description of society long ago. Perhaps「similar to two hands」rather than using just one…「Female with both hands in orifice」also makes some sense, considering her natural desires and how MARRIAGE obligated women to fidelity or face death, literally, while males were free to visit prostitutes for sex, or engage with one another of course.
　「Female with big orifice」as MARRIAGE suggests post-natal enlargement of the birth canal, with pregnancy and childbirth being a leading result of (or cause of) marriage even in the present era. In the old days, most married females soon became pregnant after nuptials, hence a「female with an enlarged orifice」was either married, widowed, or ought to be married based upon old societal norms. See 同 for details.
　MARRIAGE, meaning「depending on a woman」or, that MARRIAGE「depends upon the woman」or,「women cause」MARRIAGE, or「women depend upon」MARRIAGE, etc., etc., etc. Perhaps suggesting that MARRIAGE is the「cause that a woman captures a man's two hands」or「causes a man to use his two hands」instead of other outlets.「Big compliance」suggests MARRIAGE in the old days, again under the threat of death, and in later times of divorce that often caused a woman to be ostracized by society. Use your imagination for this one.
　Marriage is a relatively recent institution in our species’ 300,000-plus-years of history, originating perhaps 5,000 years ago in Mesopotamia, and until quite recently served to bind women to men as property assets, to ensure paternity, and protect the male's lineage among descendants. That puts marriage at ~1–2% of the age of Homo sapiens.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: marriage connections
Unihan extended: relatives by marriage
EDRDG: matrimony; marry