במדבר, פרק ל״ו, פסוק ח׳

The division of the Promised Land among the Israelites created a unique legal and social challenge when it came to women inheriting property. To maintain the integrity of each tribe's territory and prevent land from slowly shifting from one group to another, a specific framework was established to guide the marriages of inheriting daughters. This rule applies specifically to a situation where a father dies without sons, leaving his daughter as the sole heir [רש״י, רבנו בחיי]. The law carefully applies to a daughter rather than a woman in general, indicating that she is single or childless. If she were already a mother with a son from a previous marriage, her inheritance would naturally pass to her son, leaving her free to marry a man from any tribe she chooses [העמק דבר].

A more complex scenario arises if a daughter is the sole heir to parents who come from two different tribes. This situation reveals an underlying legal principle: children inherit their mother's estate just as they inherit their father's, and in both cases, a son takes precedence over a daughter [תורה תמימה, רש ר הירש, העמק דבר]. Furthermore, the flow of inheritance only moves forward. While a daughter inherits from her parents, a mother does not inherit from her daughter if the daughter passes away [תורה תמימה].

When a woman inherits property from two different tribes, she faces a decision about which tribe to marry into. The law dictates that she must marry someone from her father's tribe, though she is free to choose any family within that group [מלבי״ם]. This preference prioritizes the preservation of her father's ancestral lineage, even if it results in her mother's ancestral land being absorbed into the father's tribe [העמק דבר]. The underlying concern that marriage could cause land to transfer between tribes highlights another legal reality. It demonstrates that a husband legally inherits his wife's property. If husbands did not inherit from their wives, there would be no risk of land transferring to a new tribe upon marriage [תורה תמימה].

Commentators offer different perspectives on when this restriction applied. One approach suggests it was a temporary measure solely for the generation that conquered the land. The goal was to ensure that every tribe remained highly motivated to fight the Canaanites for their designated territory. If an inheriting woman married outside her tribe, her new husband would likely lack the drive to fight for land located in another tribe's region. Once the land was fully conquered and distributed, this restriction was lifted [מלבי״ם]. Conversely, another viewpoint maintains that the law was designed specifically for the era following the initial division, serving as a permanent safeguard to prevent tribal territories from blending in future generations [אבן עזרא, רבנו בחיי].

The social expectation for an inheriting daughter to marry within her tribe was incredibly strong. A woman who broke this rule and married into a different tribe forfeited her inheritance and was branded with the derogatory label of a prostitute. According to this understanding, the mother of Jephthah the Gileadite, who is described in the Book of Judges with this exact term, was not actually a woman of ill repute. Rather, she was an inheriting daughter who chose to marry outside her tribe, thereby losing her family's ancestral estate [רבנו בחיי].