says that Verily the Spirit (Rooh) of the believer is in 'Wadi-us-salaam, but it surely keeps an eye on what is happening in the grave. It also looks at the people who have come to visit his grave. Imam (A.S.) compares the spirit to the sun.. Even though the sun is not on the earth but is on the sky, the entire earth is illuminated by it's light, in the same manner the spirit is in Wadi-us-Salaam' but it keeps contact with the body.
The great Traditionist (Muhaddis) Sayyed Ne'matullah Jazaeri narrates an incident in his book "Anware No'maniyah" that once Shah Isma'il Safawi came to Karbala. He heard the people denying and doubting the faithfulness of Hurr bin Yazid-ar-Riyahi (one of the companions of Imam Husain, who was martyred in Karbala). He gave the order to dig the grave of Hurr.
When the grave of Hurr was opened people saw the corpse of Hurr lying afresh. A kerchief was tied on his forehead, regarding which it is related, that on the day of 'Ashoora' (the tenth of Moharram), Imam Husain (A.S.) himself had tied a kerchief on the bleeding forehead of Hurr. Shah Isma'il ordered that the kerchief should be removed and given to him so as to be kept in his shroud. As soon as the kerchief was removed, blood started oozing from the forehead of Hurr, hence it was tied back. Shah Isma'il ordered another kerchief to be tied instead of it.