The Book of Deeds= Kitaab.

“The book” is thought to refer to an account each person has, chronicling the deeds of their life, good and bad.[46] Commentators reports “affirm” that each day in a person’s life, “one or two angels” begin a new page, inscribing deeds, and that upon completion, the pages are assembled “in some fashion … into a full scroll or record”.[46] On Judgement Day the book is presented to the right hand of the resurrected person if they are going to Jannah, and left if they are to be sent to “the burning fire”.[46]