Declaring Something Permissible to be Forbidden Does not Make it so

Question :

I am a young man and I wanted to marry my maternal uncle's daughter, but my mother said that she had declared this girl to be forbidden to all of my brothers. And now my mother absolutely regrets (her prohibition) and I want to marry my maternal uncle's daughter. My question is, what is the ruling of the Islamic Law on this? And is it permissible for me to marry or not? And what is the atonement for that?

Answer:

Forbidding something which is permissible does not make it forbidden, it only falls into the category of an oath, because the Prophet said one day:
"This honey is forbidden to me."

And so Allah revealed to him His Words:
"O Prophet! Why do you forbid (for yourself) that which Allah has allowed to you."

Then He said:
"Allah has already ordained for you (O men) the absolution from your oaths. "

That is, Allah has made clear to you the atonement by which your oaths are dissolved, i.e., in His Words:
"for its expiation (a deliberate oath) feed ten Masäkin (poor persons)."

Based upon this, this girl is not forbidden to you by the words of your mother, but she must atone for them as an expiation for what she said.

And Allah knows best.

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