Carrying and burying the deceased

Q:

1. What is the shar’ee ruling in the situation where a foreigner passes away and his family from his home country makes a request for his body to be sent to them. In this case it is a legal requirement for a chemical to be injected into the veins of the deceased to keep the body from decomposing. Is this allowed in Shariah since it is a legal requirement?

2. If a foreigner passes away and his family from his home country makes a request for his body to be sent to them, then before sending the body overseas, do we have to carry out the ghusal, kaffan and perform the janaazah salaah? Once the family receives the body, will they have to repeat the ghusal and janaazah salaah?

Q: A few minutes before the scheduled time of Janazah Salaah at the cemetery, the face of the deceased male is opened. A line is formed and people file past to see the face one last time. Is this permissible or not?

Q: What rituals to be done after burying a dead person as per Qur'an and Hadith?

Q: Is it compulsory that one has to be buried only next to one's own family members?

Q: Should a grave be marked with a name plate for identification purposes or not?

Q: Is it best for the grave to be flat or slightly raised? If raised, then how high?

Q: Please explain the following:

1. Is a grave sacred land?

2. Is it best for it to be flat with no heap of sand rising?

3. Should a grave be unmarked with no plank or name-plate or is it better to have it to help identify where a person is buried?

4. Can flowers etc be planted on a grave?

5. Is there reward in spending money on maintaining a cemetery including removing weeds from the graves?

Q: Can a son in-law go in the grave to bury the mother in-law?

Q: Can a mother and child who passed away together in an accident be buried in one grave?

Q: What will be the role of a husband after the death of his wife? Can he give shoulder to the Mayyit?