الكافي 2/1/82/8

8. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad ibn ‘Isa from al-Hassan ibn Mahbub from Sadir al-Sayrafi who has said the following: “Abu ‘Abd Allah عليه السلام has said in a long Hadith, ‘When Allah raises a believer from his grave along with him, in front, comes out a form. When and wherever the believer faces a frightening scene of the scenes of the Day of Judgment the form says to him, “Do not be afraid or sad. There is good and joyful news of the honor from Allah, the Most Majestic, the Most Holy,” until he is before Allah, the Most Majestic, the Most Holy. He is held accountable very lightly and then is admitted into paradise with the form in front of him. The believer then says to the form, ‘May Allah grant you blessings, you have been a very good companion ever since you came out with me from my grave and continued speaking of joy and honor from Allah until 1 experienced them. Who are you?’ The form will say, ‘I am the joy that you had brought to the heart of your believing brother (in belief) in the worldly life. Allah, the Most Majestic, the Most Holy, created me from it to carry good news to you.”’