Can a woman leave her residence during Iddah?

Assalaamu alaikum.

If someone is observing the iddat period because of the death of their husband, can they attend a nikaah of their cousin?

Wa Alaikum Assalaam,

A woman observing the Iddah period upon the death of her husband is allowed only to come out of her residence in cases of dire need and necessity. When there is no dire need to come out, she is required to spend her Iddah in her residence. Based on this guideline of the Shariah, it will not be allowed for the widowed sister in Iddah to attend the Nikaah of her cousin since this is not deemed to be a necessity.

And Allah Knows Best.

Mufti Waseem Khan.