When the Messenger of Allah (ṣ) was taken [to the heavens] by night, he did not pass by any one of the angels but that he became happy [to see him], until he passed by an angel who did not show happiness upon [seeing] him like the [other] angels did, and he did not say anything to him; rather, he found him morose and frowning. So the Messenger of Allah (ṣ) said, ‘O Jibraʾīl, I did not pass by any of the angels but that he was gladdened by [seeing] me, and I witnessed cheerfulness, graciousness, and joy from him, except this angel. Who is this?’ He replied, ‘O Messenger of Allah, this angel is the warden of Hell, and this is how Allah has made him.’ So the Messenger of Allah (ṣ) said, ‘Ask him to show me the creation of his Lord.’ [Or] he said, ‘I would like you to ask him to show me the Fire.’ Jibraʾīl (a) said to him, ‘O angel, this is Muḥammad, the Messenger of Allah (ṣ), and he has told me that he did not pass by any of the angels but that they expressed their joy at meeting him, except you. So I told him that this is the warden of Hell and that is how Allah has made him. He has now asked me to request you to show it to him.’ So one of its levels was unveiled for him.” Then he (the Imam) said, “After [seeing] that, the Messenger of Allah (ṣ) never smiled laughingly until the day he died.”