البصير
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A woman deserving an equal amount of dowry similar to that of her peers in case her husband consummated the marriage with her without specifying a certain dowry or if the dowry assigned was something not approved by the Shariah.
"Mithl" (similar) in general, means that the attributes of something are equal to the attributes of its equivalent. Its meaning in Islamic jurisprudence varies according to the topic where the term is used. In the topic of marriage, the term "mithl" is used to refer to the woman's dowry being equal to that of her peers. The woman deserves such a dowry in certain cases, like when the husband consummates the marriage with her without specifying a certain dowry for her.
"Mithl": similar, equal. It implies equalization.