Re: As Salaamu Alaykum
Like the brother said you need to post the hadeeth so we can know what it is you are referring to. Just a side note: the word tafseer is used in reference to the Qur'aan whereas the word 'sharh - شرح' is used for hadeeth, even tough they both mean the basically the same thing. Kinda like taraweeh and tahajud which is pretty much the same night prayer except one exclusively refers to during Ramadan and the other outside of it.
A man asked ibn 'Abbaas , 'How is it Allaah will speak to everyone at the same time on the day of judgment?" He said, "Just as He provides for everyone at the same time."