الكافي 2/1/36/4

4. Ali Ibn Ibrahim has narrated from his father and Muhammad Ibn Isma’il from Fadl Ibn Shadhan together who narrated from Ibn Abi ‘Umayr from Hisham Ibn al-Hakam that Abu ‘Abdillah (al-Sadiq) عليه السلام said: “On the Day of Judgment, a group of people will raise their necks, approach the door of Paradise and knock on it. They will then be asked, ‘Who are you?’. They will say, ‘We are the people of patience.’ They will then be asked, ‘In what matters did you exercise patience?’. They will answer, ‘We exercised patience in obeying Allah and patience against disobeying Allah.’ Then Allah سبحانه وتعالى will say, ‘They have spoken the truth, allow them to enter into the Paradise.’ This is (the meaning of) the words of Allah سبحانه وتعالى : «It is those who exercise patience that receive their reward without being asked to clear any accounts» (39:10) ."