The Book of record (Kitab ul Ammol)

Kiraaman and Kaatibeen: The angels who write down the deeds of the person in their deeds book called Kitab ul Ammol. Each person has two of these angels with them, one who writes the good deeds (hasanaat), and the other who writes the bad deeds (sayi’aat).

Graduation Day: Day of Judgement, deeds book will be flying in the air and then be brought down to everyone and will be given this book of what they have done in their life. The people who have done good deeds, they will be rewarded. The people who have done bad deeds will be punished. There will be some righteous Muslims who will not be questioned and will go straight to Heaven.
When receiving this book in LEFT hand, you will try to hide your left hand behind your back. This is because receiving in your left hand or behind your back represents you have FAILED the test with bad deeds.

Narrated Abdullah ibn Amr

Allah's Messenger (peace be upon him) said that on the Day of Resurrection Allah will separate a man belonging to his people in presence of all creatures and spread ninety-nine scrolls over him, each scroll extending as far as the eye could see, then say, "Do you object to anything in this? Have my scribes who keep note wronged you?" He will reply, "No, my Lord." He will ask him if he has any excuse, and when he tells his Lord that he has none, He will say, "On the contrary you have with Us a good deed, and you will not be wronged today." A document will then be brought out containing, "I testify that there is no god but Allah, and that Muhammad is His servant and Messenger," and He will say, "Come to be weighed." He will ask his Lord, "What this document along with these scrolls is? And He will reply, "You will not be wronged." The scrolls will then be put in one side of the scale and the document in the other, and the scrolls will become light and the document heavy, for nothing could compare in weight with Allah's name.

Tirmidhi Hadith no. 1463 and Ibn Majah transmitted it.

Allah subhan wata'ala knows best.