Explanation Foundations of the Sunnah
Explained by Shaykh Al-Allama Rabee Bin Hadi Al-Madkhalee
(From the Foundations of the Sunnah is): The belief in the punishment of the grave, and that this Ummah will be tested in their graves, and will be asked about al-Īmān, al-Islām, their Lord and their Prophet, and that Munkar and Nakīr will come, as Allāh wills and wants, and to have firm belief in this.