Bukhari

After burial, the “soul” (ruh) attains such a connection with the “body” (jism) that questioning and answering can take place, but this is entirely different from worldly life. Then the soul is sent to (Illiyyin) or (Sijjin). (Illiyyin) is a place near the Throne (‘Arsh) of Allah Ta‘ala, and (Sijjin) is beneath the earth, near Hell. However, its connection with its body—whatever state it may be in—remains to a certain extent, until the Day of Resurrection when souls will once again be entered into bodies. It should be remembered that the connection between soul and body in (barzakh life) is not something comprehensible to us. We have no need for this, nor are our minds created to understand such matters—just as a buffalo cannot understand mathematics, even though two plus two is indeed four.