As an obligatory precaution...
As an obligatory precaution, the shirt should be long enough to cover the entire body from the top of the shoulders up to the middle of the forelegs, and better still if it reaches the feet. The sheet cover should be long enough to conceal the whole body, and as an obligatory precaution it should be so long that both its ends could be tied, and its peadth should be enough to allow one side to overlap the other.
As a precaution, it must be ensured that each of the three pieces used for Kafan is not so thin as to show the body of the deceased. However, if the body is fully consealed when all the three pieces are put together, then it will suffice. It is not permissible to give a Kafan which is Najis, or which is made of pure silk, or as a precaution which is women with gold, except in the situation of helplessness, when no alternative is to be found.
If the Kafan becomes Najis owing to Najasah, of the deceased, or owing to some other Najasah, its Najis part should be washed or cut off in such a manner that the Kafan may not be lost, even after the dead body has been placed in the grave. And if it is not possible to wash it, or to cut it off, but it is possible to change it, then it should be changed.
Rules of Hunot After having given Ghusl to a dead body it is obligatory to give Hunot, which is to apply caphor on its forehead, both the palms, both the knees and both the big toes. It is not necessary to rub the caphor ; it must be seen on those parts. It is Mustahab to apply caphor to the nose tip also. Caphor must be powdered and freash and Tahir and Mubah, and if it is so stale that it has lost its fragrance, then it will not suffice.
It is better that Hunotis given before Kafn, although there is no harm in giving Hunotduring Kafn or even after. Though it is Halal (allowed) for a Mutakif and a woman whose husband has died and she is in Iddah to perform him/herself, but if he or she dies, it is obligatory to give her Hunot. It is Mustahab to mix a small quantity of Turbah (soil of the shrine of Imàm Husayn) with caphor, but it should not be applied to those parts of the body, where its use may imply any disrespect.
It is also necessary that the quantity of Turban is not much, so that the identity of caphor does not change. Rules ofSalat -ul-Mayyit It is obligatory to offerSalat-ul-Mayyit for every dead Muslim, as well as for a Muslim child if it has completed 6 years of its age.