Q: If the husband passed away, is the wife allowed to go to a friend who is sick and asked her to come and visit in her iddat (waiting period)?
A: A woman who is in iddat may not leave the home for any reason except when it is a matter of life and death. So she is not allowed to visit a sick friend.
The wife who is in the iddat of wafaat is allowed to go out to earn a livelihood if there is no one to provide for her or if she has not yet received her share of the husband’s estate. If she has provisions then she is not allowed to leave the home even for work.
And Allah Ta’ala knows best
Mufti Siraj Desai