How to work out the months for ‘iddah following death or divorce, or fasting for expiation

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She does not have a place to live; where should she observe ‘iddah following khula‘?
Is it permissible for a woman who is in ‘iddah following the death of her husband to come out to receive condolences from people somewhere other than her own house?

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Related Answers:
When does the ‘iddah begin for a woman whose husband went missing then was found dead?
‘Iddah of a woman who did not know that her husband has died
Can he take his wife back after her ‘iddah has ended?
She does not have a place to live; where should she observe ‘iddah following khula‘?
Is it permissible for a woman who is in ‘iddah following the death of her husband to come out to receive condolences from people somewhere other than her own house?

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