Is the marriage contract valid if she is not present?

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Check below answers in case you are looking for other related questions:
Marriage to a Woman of the People of the Book – Do You Advise It?
The marriage contract is not valid if the man’s sister asks for the hand of the woman for her brother, in the presence of the woman’s guardian

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Marrying a Christian woman on paper in order to have the right to reside in a kaafir country
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Marriage to a Woman of the People of the Book – Do You Advise It?
The marriage contract is not valid if the man’s sister asks for the hand of the woman for her brother, in the presence of the woman’s guardian

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