What is Persian tradition when someone dies?

In Persian tradition, when someone dies, the family and friends gather to mourn and pay their respects, often holding a ceremony called "Ghahvekhani," where prayers and condolences are shared. The body is typically buried within a day, and rituals include washing and shrouding the body in a simple white cloth. Mourning periods can last up to 40 days, and gatherings known as "Siah-Bazi" or "Chehelom" may be held to honor the deceased. Throughout this time, it is customary to provide comfort and support to the grieving family.