المعنى الاصطلاحي :

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A person's ascription to his paternal line of relatives (his father's family lineage).

الشرح المختصر :

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"Intisaab" (affiliation) means that a person is attributed to his relatives and his name is joined to theirs. What is intended by 'relatives' here is whoever is related to the person through his father's lineage, meaning his father, his father's father, and so on. A son is attributed to his father in lineage, and he is not attributed to his mother except in case her husband denied that the child is his in an incident of "li‘aan" (oath taken upon accusation of fornication). There are different categories of "intisaab": 1. "Intisaab" to the two parents. 2. "Intisaab" to the person who freed one from slavery. 3. "Intisaab" to a tribe, such as saying that so-and-so is "Qurashi", i.e. from the tribe of Quraysh. 4. ascribing someone to a profession, such as saying that so-and-so is a "najjaar" (carpenter), i.e. he is ascribed to "nijaarah", meaning carpentry. 5. ascribing someone to a place, like saying that so-and-so is "Makki", meaning that he is from Makkah.

التعريف اللغوي المختصر :

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"Intisaab": a connection or relation between two things. Derived from “nasab”, which means kinship

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