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## Trivarnika Achar
**One year rule:**
If two children (either both sons, both daughters, or one son and one daughter) are born to the same mother within one year, they should not be married within six months of each other. However, if the children are born in different years, they can be married within six months of each other. Similarly, within one year, the "Choulkarm" ceremony should not be performed within six months of the marriage of a son or sons. If the ceremonies are performed in different years, there is no harm.
**Note:** Repetition in the verses should not be considered as these verses are composed by different Rishis and are collected here. Therefore, repetition is natural.
**Marriage of daughters:**
If two daughters are born to the same mother, it is considered a fault to marry the younger daughter before the elder daughter. However, if the daughters are born to different mothers, there is no fault in marrying the younger daughter first.
**Note:** Marrying the younger daughter before the elder daughter is called "Parivedan".
**Menstruation before marriage:**
If a girl becomes menstruated before marriage, her brothers and parents will go to hell.
**Note:** The age of menstruation for girls is twelve years. Therefore, they should be married before twelve years. Although some girls may menstruate after twelve years, many girls menstruate at twelve years. Therefore, marriage should be performed within this period.
**Consequences of menstruation before marriage:**
If a girl becomes menstruated before marriage, she should be considered a Shudra or a menstruating woman. Her husband should also be considered a Shudra's husband or a menstruating woman's husband.
**Second marriage:**
If a woman does not have children within ten years of her first marriage, her husband can remarry. If a woman only has daughters and no sons, her husband can remarry after twelve years. If a woman has children but they do not survive, her husband can remarry after fifteen years. If a woman is childless and unpleasant, her husband can remarry immediately.
**Note:** "Unpleasant" also means "adulterous".