Yes, they have to be separated at the age of 7.

I wanted to ask that is it prohibited for a real brother sister to normally lie on a same bed or same place if they had to sleep. Is it necessary that they sleep on separate beds or in different rooms?

Fiqh of the family | October 8, 2015 3:30 am
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If a woman doesn’t have good relations with her in laws and doesn’t visit or talk to them BUT doesn’t stop her husband from maintaining his ties of kinship. So by not having anything to do with her in laws, will the woman get the sin of breaking ties of kinship? What kind of relations come under the category of breaking ties of kinship?
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Can we name our child as Hashir,what does it mean ,is it one of the names of our beloved prophet s.a.w.