ANSWER:

If the price is fixed and you are buying from the owner and there isn’t any way that the installments would increase more than what was agreed upon initially, this is permissible.

Sheikh is buying items in an instalment method permissible in Islam

Halal/Haram Matters, Islamic economy, Riba | August 1, 2022 1:32 am
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I am in my 24th year. I have being told that i cannot sleep with my mother or sisster or any one in same quilt. My question is does same applies to my grandmother. Cant i sleep with my grandmother in same quilt?
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Sheikh can a girl child who is 9 years old wear kurtas which were worn by her brother’s.. these are white kurtas which were worn when her brother’s were at young age .