What are the rulings concerning a widow, and what are her obligations and entitlements?

For the wife whose husband has passed away: - Inheritance: She inherits one-fourth if her husband has no lineal descendant (child or grandchild), and one-eighth if he has a lineal descendant, provided she is Muslim. - Housing: She has the right to reside in her deceased husband's house or to have a house rented for her from his estate until the end of her iddah (waiting period).

Incumbent upon her: - Iddah: To give birth if she is pregnant, or four months and ten nights if she is not pregnant. - Ihdad (Mourning): To abstain from adornment, wearing dyed clothes, perfumes, and kohl throughout the iddah period.