Janaazah

Q: Is visiting the grave shirk (polytheism)?

Did any of the 4 imams (Hanafi, Shafi, Hanbali, Maliki) ever visit the graveyard? 

Q: Is it possible to take a photo of the grave after burial to show the ladys at home?

Q: During the rainy season, water and water from the drain gets collected by the side of my father's grave. Is it right to build a small wall around the grave to prevent the grave from getting contaminated with the water?

Q: Will the virtue of passing away on a Friday also apply for one who passed away on Friday night or Saturday morning before sunrise?

Q:

1. Can a person build a wooden structure over a Muslim grave as my family members want to do this over my fathers grave as well as erect a granite headstone and I dont feel it is islamic.

2. Please advise regarding making zikr every sunday at the grave.

Q: If someone's father died and his son wants to lead his father's salaatul janazah but he trim's his beard, can he lead the prayer being an imaam?

Q: What is the sharai ruling regarding waiting for the arrival of maiyyat's relatives after performing salatul janazah and placing maiyyat in the qabar with rest of the body covered, and only the face is left open in the qabar for 2,3 hours until the relatives arrive. The face is covered after the relatives coming from distant places view the deceased.

Q: I have heard from someone that if one passes away because of cancer, they pass away as a Shaheed (that is they gain martyrdom). They also have said that if one passes away from the corona virus and any other such virus then they also pass away as a Shaheed. Is there any truth to these statements?

Q: If a person suffering from coronavirus dies, it is said that he shouldn't be given ghusal. Instead, he should be wrapped in a sheet and burried. The doctors say that giving ghusal increases the chances of spread of virus. What does shariat command us?