and its isnād is authentic. The ḥāfiẓ mentioned in "al-Fatḥ" (11/457) that al-Nasāʾī authenticated it in "Kitāb al-Īmān wa-al-Nudhūr" and confirmed it, but I did not see the mentioned authentication in it, so perhaps it is in "al-Sunan al-Kubrā" by al-Nasāʾī. It was also recorded by Aḥmad (2/69) and al-Bayhaqī (10/29) from Abū Muḥammad al-Kindī who said: "Ibn ʿUmar came to a man who said, 'Shall I swear by the Kaʿbah?' He replied, 'No, but swear by the Lord of the Kaʿbah, for ʿUmar used to swear by his father, and the Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) said: Do not swear by your father, for whoever swears by other than Allāh has committed shirk.'" Then al-Bayhaqī also narrated with a chain of trustworthy men that ʿUmar intended to strike Ibn al-Zubayr for swearing by the Kaʿbah and said to him, "Do you swear by the Kaʿbah?!"

"The person who had the most severe trials in the world from the people of Paradise will be brought, and it will be said, 'Dip him into the bliss of Paradise,' so he will be dipped into it, and Allāh will say: O son of Adam, have you ever seen any misery or anything you disliked? He will say: No, by Your might, I have never seen anything I disliked. Then the person who had the most luxurious life in the world from the people of Hell will be brought, and it will be said, 'Dip him into it,' and he will say: O son of Adam, have you ever seen any good or any comfort? He will say: No, by Your might, I have never seen any good or any comfort." It was recorded by Aḥmad (3/253) who said: ʿAffān narrated to us, Ḥammād narrated to us, Thābit informed us from Anas that the Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) said: and he mentioned it. I say: This isnād is authentic according to the criteria of Muslim, and he also recorded it in "Ṣaḥīḥ" (8/135) and Aḥmad as well (3/203) from Yazīd ibn Hārūn who informed us, Ḥammād ibn Salamah with a similar narration, and in it, "No, by Allāh, O Lord" in both instances