In Islamic tradition, Ghusal refers to the ritual washing of the deceased's body before burial. It is a mandatory obligation for Muslims to perform Ghusal on the deceased as a sign of respect and to prepare them for burial. It is a highly regarded practice in Islam, and it is considered to be an important act of reverence for the deceased.

A cold room or morgue is a place in a mosque where the deceased is kept temporarily before the Ghusal and burial. A cold room in a mosque, also known as a mortuary or a Janazah room, is a space where the body of a deceased person is kept before the ghusl is performed and before the funeral prayer (Salat al-Janazah) is offered. The Ghusal is typically carried out by a group of individuals who have been trained in the proper methods of washing the body according to Islamic traditions. The body is washed with water and soap, and then wrapped in a simple shroud before being placed in a casket for burial. This is particularly important in warmer climates where burial must occur as soon as possible to prevent the body from deteriorating.

Both the Ghusal and the use of a cold room are important parts of the Islamic funeral rites and are carried out with great care and reverence for the deceased. They are intended to ensure that the body is treated with respect and dignity, and that the deceased is prepared properly for their journey to the next life.